Объяснение:

3. Is she writing a letter? Yes, she is.
4. Are you drawing an elephant? Yes, I am.
5. Are they wear T-shirts? Yes, they are
6. Is he eat a Pizza? No, he isn't

Ответ:

3.Is she writing a letter?

Yes, she is.

4. Are you drawing an elephant?

Yes, I am.

5.Are they wearing T-shirts?

Yes, they are.

6. Is he eating a pizza?

No, he is not.