1 . Nothing_________ (存在) on the moon as there is no water and no air.

2 . The old couple have been married for 40 years and never once ________.

A．they had quarreled	B．they have quarreled
C．have they quarreled	D．had they quarreled

3 . The latest wave of smog(雾霾) ,_____ first swept into Shanghai and Jiangsu province on Dec. 1^st ,_______ at least four car accidents due to low visibility.

A．in which; cause	B．where ; caused
C．which ; has caused	D．that; is caused

4 . It was a pity ______ John wouldnt be able to spend his vacation with me.

A．that

B．when

C．why

D．whether

5 . Our success depends ______ everyone works hard or not.

A．upon whether	B．on that
C．in which	D．on why

6 . The teacher said ____ Tom was an honest boy and ____ he will be our monitor.

A．that; /	B．whether; /
C．/; that	D．/; whether

7 . _________the wounded soldiers need are good doctors and medicine.

A．That

B．Who

C．What

D．Whether

8 . He has got three brothers, ________ is a doctor.

A．all of them	B．none of whom
C．all of whom	D．both of them

9 . I was so familiar with him that I recognized his voice _____ I picked up the phone .

A．while	B．after
C．in case	D．the instant

10 . It was the principles I learned from my reading _____ enabled me to get bigger and better jobs.

A．that

B．which

C．what

D．who