1. You _____ take your umbrella. It’s not raining.
a. couldn’t b. needn’t c. mustn’t
d. may not

2. Drivers _____stop when the traffic lights are red.

a. could b. must c. may d. will

3. People ____ walk on grass.

a. could not b. need not
c. must not d. may not

4. You should not leave small objects lying around. Such objects _____ be swallowed by children.
a. must b. need c. may
d. must not

5. Take an umbrella. It _____ rain later.
a. need b. should c. must not
d. might

6. Can you stand on your head for more than a minute? No, I ______.
a. could b. need c. need not
d. cannot

7. The teacher said we _____ read this book on our own as it is optional.
a. could b. would c. should d. will

8. I could speak Korean when I was a child. Now, I ____ just say a few things in the dialect.
a. may b. can c. must d. need​