1 . He has worked ______ the maths problem for nearly an hour but he simply can’t work it ______.

A．on; at

B．on; out

C．at; up

D．for; out

3 . The days are gone ______ physical strength was all you needed to make a living.

A．when

B．that

C．where

D．which

4 . He doesn’t think that the plan is practical, _____?

A．does he

B．doesn’t he

C．is it

D．isn’t it

5 . Taking on this challenge will bring you ______ someone who shares your interests.

A．in exchange for	B．in answer to
C．in memory of	D．in contact with

6 . I told you that every effort paid off and you should stick to your goal, ________?

A．didn’t I

B．shouldn’t you

C．isn’t it

D．didn’t it

7 . —When will the next meeting begin?
— I have no idea. But just a minute, I ______ it for you.

A．will check

B．checked

C．check

D．would check

8 . The workers were lazy and failed to finished the building ________.

A．at schedule

B．on schedule

C．behind schedule

D．ahead of schedule

9 . —You wouldn’t mind my opening the window, would you?
— ________, just go ahead.

A．Yes, I wouldn’t

B．No, I would

C．Yes, I would

D．No, I wouldn’t

10 . When Miss Beria speaks in class, we have to keep quiet, ________?

A．do we?

B．don’t we

C．does she

D．doesn’t she