1 . Frank insisted that he was not asleep ________ I had great difficulty in waking him up.

A．whether

B．although

C．for

D．so

2 . It may take a while _____ you find a hobby that truly interests yourself, so
don’t give up.

A．that

B．before

C．unless

D．since

3 . _______ it is so hot, I guess we can’t do anything until after dark.

A．In case

B．Now that

C．Even if

D．As though

4 . The concert was a great success — there wasn’t a single empty seat in the concert hall, ___________ it was very cold.

A．because	B．when
C．unless	D．although

5 . ________, as long as I’m with nature, I don’t care．

A．However tough the voyage is	B．Whatever tough the journey is
C．However the voyage is tough	D．Whatever the journey is tough

6 . _________ about wild plants that they decided to make a trip to Madagascar for further research.

A．So curious the couple was	B．So curious were the couple
C．So were curious the couple	D．So was the couple curious

7 . Atomic energy has _____ many uses, either as fuel or as radiation, _____ it is almost impossible to imagine all the great changes it will bring into our lives.

A．such…as

B．such…that

C．too…then

D．so…that

8 . The policeman told the injured bicycle rider that he would have to lie _____ he had fallen until the arrival of an ambulance.

A．because

B．where

C．after

D．when

9 . So sudden ________that the enemy had no time to escape.

A．did the attack	B．the attack did
C．was the attack	D．the attack was