English grammar worksheet focusing on subject and object pronouns, designed for language learners to practice identifying and using pronouns correctly.

Exercise 1: Circle the correct pronoun

#### Explanation:
- Subject Pronouns are used as the subject of a sentence (e.g., I, you, he, she, it, we, they).
- Object Pronouns are used as the object of a verb or preposition (e.g., me, you, him, her, it, us, them).

Let's solve each sentence:

1. Mike is in his room. He / Him is reading a book.
- "He" is the subject of the verb "is reading."
- Correct answer: He

2. Sarah is a new student. I want to invite she / her to the party.
- "Her" is the object of the verb "invite."
- Correct answer: her

3. My friends and I are at my house. We / Us are watching a movie.
- "We" is the subject of the verb "are watching."
- Correct answer: We

4. Amy is wearing new shoes. She bought they / them yesterday.
- "Them" is the object of the verb "bought."
- Correct answer: them

5. My parents have a new car. They / Them got it last month.
- "They" is the subject of the verb "got."
- Correct answer: They

6. A: When do you see your grandma? B: I see she / her every Sunday.
- "Her" is the object of the verb "see."
- Correct answer: her

7. Sam and Jenny are my friends. They / Them are my neighbors too.
- "They" is the subject of the verb "are."
- Correct answer: They

8. I need to see your English book. Can you show it / them to me?
- "It" refers to the singular noun "book."
- Correct answer: it

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Exercise 2: What does the pronoun in bold refer to?

#### Explanation:
In this exercise, we need to identify what the pronoun in bold refers to based on the context of the sentence.

1. We moved to a new house. It has a big garden.
- "It" refers to "a new house."
- Answer: a new house

2. I did my homework yesterday, but I didn't bring it today.
- "It" refers to "my homework."
- Answer: my homework

3. Andy is a new student. Let's go and meet him.
- "Him" refers to "Andy."
- Answer: Andy

4. My friends and I are in Ms. Takeda's class. She teaches us Japanese.
- "Us" refers to "My friends and I."
- Answer: My friends and I

5. Mary has three tortoises. She got them from her friend.
- "Them" refers to "three tortoises."
- Answer: three tortoises

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Final Answers:

#### Exercise 1:
1. He
2. her
3. We
4. them
5. They
6. her
7. They
8. it

#### Exercise 2:
1. a new house
2. my homework
3. Andy
4. My friends and I
5. three tortoises

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Boxed Final Answer:

```plaintext
Exercise 1:
1. He
2. her
3. We
4. them
5. They
6. her
7. They
8. it

Exercise 2:
1. a new house
2. my homework
3. Andy
4. My friends and I
5. three tortoises
```