Grade 1 vocabulary worksheet focusing on the use of "am," "is," and "are" with engaging illustrations.

To solve this worksheet, we need to choose the correct helping verb: am, is, or are.

Here is the simple rule to remember:
* Use am only with I.
* Use is for one person, one thing, or something you cannot count (singular).
* Use are for more than one person or thing (plural), or for you, we, and they.

Let's look at each sentence step by step:

1. Tom \_\_\_\_\_ watering the flowers in his garden.
* "Tom" is one person.
* We use is.
* *Sentence:* Tom is watering...

2. The books \_\_\_\_\_ new.
* "Books" ends in 's', so there is more than one book.
* We use are.
* *Sentence:* The books are new.

3. There \_\_\_\_\_ hot coffee in the cup.
* "Coffee" is a liquid. You cannot count it like apples or cars (it is singular/uncountable).
* We use is.
* *Sentence:* There is hot coffee...

4. I \_\_\_\_\_ writing a story at my desk.
* The subject is "I".
* We always use am with I.
* *Sentence:* I am writing...

5. The bread and knife \_\_\_\_\_ on the table.
* Here we have two things: "bread" AND "knife". That makes them plural.
* We use are.
* *Sentence:* The bread and knife are on the table.

6. The bottle \_\_\_\_\_ full of milk.
* "The bottle" is just one thing.
* We use is.
* *Sentence:* The bottle is full...

7. I \_\_\_\_\_ taking my brother to the park.
* The subject is "I" again.
* We use am.
* *Sentence:* I am taking...

Final Answer:
1. is
2. are
3. is
4. am
5. are
6. is
7. am