Interactive grammar worksheet focusing on helping verbs (is, am, are, has, have) for English language learners, with fun illustrations and sentence completion exercises.

To solve the problem, we need to choose the correct helping verbs (`is`, `am`, `are`, `has`, `have`) to make meaningful sentences. Let's go through each sentence step by step:

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1. Marcus ______ American boy. His parents ______ teachers. They ______ a big house in the country and Martin’s dad ______ a sports car. His mother ______ tall and fair. She ______ brown eyes and black hair.

- Marcus ______ American boy.
- "Marcus" is a singular subject, so we use is.
- Sentence: Marcus is an American boy.

- His parents ______ teachers.
- "His parents" is a plural subject, so we use are.
- Sentence: His parents are teachers.

- They ______ a big house in the country.
- "They" is a plural subject, and the verb needed here is have (to indicate possession).
- Sentence: They have a big house in the country.

- Martin’s dad ______ a sports car.
- "Martin’s dad" is a singular subject, so we use has (to indicate possession).
- Sentence: Martin’s dad has a sports car.

- His mother ______ tall and fair.
- "His mother" is a singular subject, so we use is.
- Sentence: His mother is tall and fair.

- She ______ brown eyes and black hair.
- "She" is a singular subject, so we use has (to indicate possession).
- Sentence: She has brown eyes and black hair.

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2. Lucy and Lara ______ sisters. They ______ two white cats and they want to buy a dog. Their mother ______ very talkative and she ______ many friends in the neighbourhood.

- Lucy and Lara ______ sisters.
- "Lucy and Lara" is a plural subject, so we use are.
- Sentence: Lucy and Lara are sisters.

- They ______ two white cats.
- "They" is a plural subject, so we use have (to indicate possession).
- Sentence: They have two white cats.

- Their mother ______ very talkative.
- "Their mother" is a singular subject, so we use is.
- Sentence: Their mother is very talkative.

- She ______ many friends in the neighbourhood.
- "She" is a singular subject, so we use has (to indicate possession).
- Sentence: She has many friends in the neighbourhood.

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3. Hello! I ______ Julia and this ______ my brother, John. I ______ brown hair and green eyes. John ______ black hair and blue eyes. We ______ too similar. We ______ seven years old and we go to the same school. But our hobbies ______ different. My favourite subject ______ English but John doesn’t like it. His favourite subject ______ Physical Education. He loves sports. I ______ good at sports too, so I ______ also interested in sports.

- Hello! I ______ Julia.
- "I" is a singular subject, so we use am.
- Sentence: Hello! I am Julia.

- This ______ my brother, John.
- "This" is a singular subject, so we use is.
- Sentence: This is my brother, John.

- I ______ brown hair and green eyes.
- "I" is a singular subject, so we use have (to indicate possession).
- Sentence: I have brown hair and green eyes.

- John ______ black hair and blue eyes.
- "John" is a singular subject, so we use has (to indicate possession).
- Sentence: John has black hair and blue eyes.

- We ______ too similar.
- "We" is a plural subject, so we use are.
- Sentence: We are too similar.

- We ______ seven years old.
- "We" is a plural subject, so we use are.
- Sentence: We are seven years old.

- But our hobbies ______ different.
- "Our hobbies" is a plural subject, so we use are.
- Sentence: But our hobbies are different.

- My favourite subject ______ English.
- "My favourite subject" is a singular subject, so we use is.
- Sentence: My favourite subject is English.

- His favourite subject ______ Physical Education.
- "His favourite subject" is a singular subject, so we use is.
- Sentence: His favourite subject is Physical Education.

- I ______ good at sports too.
- "I" is a singular subject, so we use am.
- Sentence: I am good at sports too.

- So I ______ also interested in sports.
- "I" is a singular subject, so we use am.
- Sentence: So I am also interested in sports.

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Final Answer:

1. Marcus is an American boy. His parents are teachers. They have a big house in the country and Martin’s dad has a sports car. His mother is tall and fair. She has brown eyes and black hair.
2. Lucy and Lara are sisters. They have two white cats and they want to buy a dog. Their mother is very talkative and she has many friends in the neighbourhood.
3. Hello! I am Julia and this is my brother, John. I have brown hair and green eyes. John has black hair and blue eyes. We are too similar. We are seven years old and we go to the same school. But our hobbies are different. My favourite subject is English but John doesn’t like it. His favourite subject is Physical Education. He loves sports. I am good at sports too, so I am also interested in sports.

Boxed Final Answer:
\boxed{
\begin{aligned}
&1. \text{Marcus is an American boy. His parents are teachers. They have a big house in the country and Martin’s dad has a sports car. His mother is tall and fair. She has brown eyes and black hair.} \\
&2. \text{Lucy and Lara are sisters. They have two white cats and they want to buy a dog. Their mother is very talkative and she has many friends in the neighbourhood.} \\
&3. \text{Hello! I am Julia and this is my brother, John. I have brown hair and green eyes. John has black hair and blue eyes. We are too similar. We are seven years old and we go to the same school. But our hobbies are different. My favourite subject is English but John doesn’t like it. His favourite subject is Physical Education. He loves sports. I am good at sports too, so I am also interested in sports.}
\end{aligned}
}