The policeman is still not sure ______ the young man killed himself or not.
| A．if | B．that | C．whether | D．weather |
—Excuse me, can you give me a _______? —Sure.
A. hand B. help C. ball
Mom, don’t worry ______me. I can take care of myself.
A. about B. with C. for
Do you prefer _______?
A. skate B. skates C. skating
—Must I finish my homework at once?
— No, you ______.
A. needn’t B. mustn’t C. won’t
You ______ wash your hands before meals. It is good for your health.
A. may B. can C. must