.After studying chemistry for years, I can only say I have____general knowledge of this subject.
| A．/ | B．a little | C．a | D．some |
There goes the bell for the class.Let’s stop___.
| A．to talk | B．to be talking | C．talked | D．talking |
--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 |