The story is so strange that we have never________it before．
| A．heard from |
| B．heard of |
| C．heard |
| D．listened to |
I _____ ask my father to give up smoking. It’s bad for his lungs.
A. must B. needC. shouldn’t
It’s cold outside, you’d better not _____ out.
A. to goB. go C. going
Why _______ climb mountains this weekend?
A. don’t B. didn’t C. not
There _______ a school sports meet next weekend.
A. is going to have B. isC. is going to be
As we know, water is very important _______ us.
A. of B. to C. on