—It seems that you know Dr. John very well.
—Of course, we ________ together for five years in the 1990s.
| A．have worked | B．had worked |
| C．are working | D．worked |
--Must we hand in our homework now?---No, you ___. You ___ hand them in before Friday.
| A．mustn’t , can | B．needn’t, can | C．can't , can | D．mustn’t, must |
When I was walking in the street, I heard my name ___.
| A．to call | B．calling | C．call | D．called |
We ___ to the farm last week.
| A．had | B．needed to | C．didn’t | D．had to go |
You’ ll feel better as long as you ___ the doctor’s advice.
| A．ask for | B．give | C．follow | D．understand |
I can’t find my English book. I must ___ it at home this morning.
| A．forget | B．leave | C．have forgotten | D．have left |