Choose the correct answer.

1. What are you _________?

A. draw    B. drawing    C. drew

2. Why shouldn’t I play with the _____? – Because you may cut yourself.

A. knife    B. wall    C. ball

3. I have to visit the ________ because of my toothache.

A. doctor    B. surgeon    C. dentist

4. They should not jump into the water. They may _______.

A. drown    B. hot    C. crawl

5. What do you _____ of the story? – I think it is interesting.

A. know    B. understand    C. think