1 . At no time _____ the rules of the game. It was unfair to punish them.

A．they actually broke	B．do they actually break
C．did they actually break	D．they had actually broken

2 . He talked a lot about things and persons ______ they remembered in the school.

A．which

B．who

C．that

D．what

3 . The university estimates that living expenses for international students ________around $8450 a year, which ________a burden for some of them.

A．are; is

B．are; are

C．is; are

D．is; is

4 . Wind power is an ancient source of energy ________ we may return in the near future.

A．on which

B．from which

C．by which

D．to which

5 . The factory ________ we’ll visit next week is not far from here.

A．which

B．where

C．in which

D．to which

6 . The factory produces half a million pairs of shoes every year, 80%_________are sold abroad.

A．of which

B．which of

C．of them

D．of that

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

A．when

B．that

C．where

D．which

8 . It was the middle of the night________ my father woke me up and told me to watch the football game

A．that

B．as

C．which

D．when

9 . The number of smokers,_______ is reported, has dropped by 17 percent in just one year.

A．it

B．which

C．what

D．as

10 . However hard he tries, the recorder_________.

A．didn't work

B．won't work

C．isn't working

D．hasn't worked