I have heard a lot of good things about you ________ I came back from abroad.
| A．since | B．until | C．before | D．when |
-- Catherine, I have cleaned the room for you.
---Thanks. You _______ it. I could manage it myself.
| A．needn’t do | B．shouldn’t have done | C．mustn’t do | D．needn’t have done |
It didn’t take the children long to________ the correct answer.
| A．carry out | B．figure out | C．turn out | D．give out |
_____ herself to science, the great scientist took little notice _____ the honors given to her.
| A．Devoted, of | B．Devoting, of | C．Devoted, about | D．Devoting, about |
The old couple, ____had been admitted to university, were living a hard life.
| A．both their children | B．both of whom children |
| C．both of whose children | D．whose their children |
--Has Peter handed in his paper yet?
---I’m not sure. He _______ on it last week.
| A．was working | B．has worked | C．worked | D．had worked |