1.________，he had no time to rest．
A．As he was tired
B．If he was tired
C．Tired as he was
D．Now that he was tired
2.The doctors are ________ about the guidelines under which they can carry out euthanasia.
A．at a stretch
B．at a loss
C．at random
D．at length
3.People who can’t _______ between colors are said to be color-blind.
A. separate
B. divide
C. distinguish
D. appointed
4.Robots differ from automatic machines ________ after completion of one specific task，they can be reprogrammed by a computer to do another one．
A．in case
B．in that
C．in which
D．in time
5.Why do you blame him for his poor judgment on the matter ______ he really needs is encouragement?
A．when that
B．since that
C．when what
D．now that
6.You are the most direct young woman I have ever _______.
A. come to
B. come into
C. come over
D. come across
7.If an earthquake occurred，some of the one-storey houses ________．
A．might be left stand
B．might leave to be standing
C．might be left to stand
D．might be left standing
8.I understood from her that you undertook other important work ______.
A. as well
B. as too as
C. as also as
D. as good as
9.We promise that we’ll meet again after we _______ our college education in three years’ time．
A．finish
B．will finish
C．finished
D．will have finished
10.With such a poor score in the entrance exam， it’s ________ impossible for him to be admitted to this university．
A．roughly
B．absolutely
C．fully
D．exclusively
11._______ is known to all，China will be an _______ powerful country in 20 or 30 years’ time．
A．That；advancing
B．This；advanced
C．As；advanced
D．It；advancing
12._______, could you get me a Turkish conversation book?
A. In this way
B. By the way
C. In no way
D. In any way
13.Since we have a focused subject，we should not talk ________.
A．at once
B．at hand
C．at intervals
D．at random
14.Such person _______ you describe is rare nowadays.
A．it
B．as
C．that
D．what
15.It rained hard yesterday, ______ prevented me from going to the park.
A. that
B. which
C. as
D. it
16.Although Tom is satisfied with his academic achievement，he wonders _______ will happen to his family life．
A．it
B．that
C．what
D．this
17.Please write a report _______ the above subjects are to be covered.
A. which
B. in which
C. that
D. in that
18.Never before _______ so rapidly developing as it is today．
A．has our country been
B．our country has been
C．has been our country
D．our country hasn’t been
19.When _______, water will be turned into steam.
A. heated
B. heating
C. being heat
D. having heated
20.If you _______ in behaving in this way you will bring yourself nothing but trouble.
A. continue
B. persist
C. decide
D. react
As 引导的倒装句
2 B
3 A 分开
4 A 为了避免或发生某种情况
5 C when引导时间状语 what 作need的宾语
6 D 碰到
7 D
8 A
9 A
10 A
11 C
12 B 逗号后面是一个一般疑问句
13 C
14 B 先行词是 such时 连接词用as
15 B
16 C what 作happen 的主语
17 B
18 A
19 A 过去分词表被动 被加热
20 B persist in doing sth. 坚持做某事
2 B at a loss 迷惘
3 C 区分，辨别
4 B in that因为
5 C
6 D 遇到
7 D
8 A
9 A 条件句中现在时表将来时
10 B
11 C
12 B 顺便说
13 C
14 C
15 B
16 C
17 B
18 A
19 A
20 B
后面懒得解释了
应该是对的。
参考资料：英语是我母语
相信是对的~恩~
