—Is this John’s T-shirt?
—It______ be his. It`s much too small for him.

• A. needn’t
• B. shouldn’t
• C. can’t
• D. must

We'd better ______ others when they make mistakes.

• A. don't be laughing at
• B. laugh at
• C. not laugh at
• D. don't laugh at

— Whose shirt is this?
— It ______ be Tony's. It is much too small for him.

• A. mustn't
• B. can't
• C. needn't
• D. won't

—Mom, I'm tired and I feel sick.
—Well, you ______ go to bed early and ______ take a vacation tomorrow.

• A. can; can't
• B. shouldn't; can
• C. should; shouldn't
• D. can; can

—Can you go to the movies with us on Friday?
—Sorry, I ______ study for my chemistry test.

• A. need
• B. have to
• C. can
• D. may

—Can Sammy ______?
—Yes, he can.

• A. dance
• B. dances
• C. is dance
• D. danced