高中英语从属连词单选题

1 think we'd better keep to the subject,        we'11 waste our time．

A．and

B．or

C．but

D．so

Shut the window, ______ it’ll get too cold in here.

A．so

B．yet

C．but

D．otherwise

Supporters of underground development say that building down ______ building up is a good way to use the earth’s space.

A．as well as	B．other than
C．rather than	D．more than

_____ you talk to or write a message to someone, you show your language skills to others.

A．Every time

B．Some time

C．At times

D．The time

31．Tired of her endless complaints, I walked out of the room              she could open her mouth．

A．before

B．until

C．when

D．once

I'll be out for some time. ______ anything important happens, call me up immediately.

A．In case	B．As if
C．Even though	D．Now that

I always had doubts               he would be the best man for the job , but now I don’t doubt            he can do it.

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

Beckham shook his head  to say “Don’t trust her.”

A．even though

B．as though

C．unless

D．Until

Several weeks had gone by______ I realized the painting was missing.

A．as

B．before

C．since

D．when

Will it be ages ______ he goes back to school? I'm so worried about him.

A．before

B．after

C．when

D．as

— Haven’t met Mary lately. What has happened to her?
— Well, it’s about three months ________she worked here.

A．before

B．after

C．since

D．when

______ the terrible earthquake in Japan not happened, people’s awareness _______drawn to the risk of being exposed to nuclear radiation.

A．If; wouldn’t have been	B．If; wouldn’t have
C．Had; wouldn’t have been	D．Had; wouldn’t have

A person who has slept well will have a clear mind and work efficiently in the daytime ______ people with sleep disorders find it difficult to concentrate during the day.

A．unless

B．while

C．if

D．until

a single world can change the meaning of a sentence, a single sentence can change the meaning of a paragraph.

A．	Just as	B．	Even though
C．	Until	D．	Unless

It is so cold that you can't go outsidefully covered in thick clothes.

A．

if

B．

unless

C．

once

D．

when