1.Withtherapiddevelopmentofeconomy,thefreewaynetworkinChinagreatlyoverthepastdecades.A.wasexpandedB.expandedC.hasbeenexpandedD.hasexpanded2.IdidwhatIcouldthecomputer,butisstilldoesn'twork.A.repairB.repairingC

Question

1.With the rapid development of economy,the freeway network in China ____ greatly over the past decades.
A.was expanded B.expanded C.has been expanded D.has expanded
2.I did what I could ___ the computer,but is still doesn't work.
A.repair B.repairing C.to repair D.to be repaired
3.With spring ______,millions of insects arrive to attack the farmers'crops.
A.is coming B.comes C.coming D.to come
4.The wife is lazy ____ her husband is hard working.____ he is just over thirty,he looks much older for his age.
A.when;when B.when;while C.while;when D.while;while
5.---Last night when I was watching a horror film at home,the lights went out suddenly.
---Oh,you _____
A.might be frightened B.must have been frightened
C.could have been frightened D.should be frightened

Answer 1

1.D
over the past decades表明该句应该使用现在完成时,排除AB；
句意为主动更佳,排除C
2.C
what I could为what I could do的省略,它做前面did的宾语,则后面是一个不定式短语做目的状语,句意为：尽我所能去做某事,排除AB；
I和repair为主动关系,排除被动的D
3.C
with后面是复合宾语,即“宾语 + 宾语补足语”,排除构成句子结构的AB；
spring come该动作已经发生,排除表示未发生动作的不定式短语D,且spring和come之间为主动关系
4.C
while可以表示对比/转折,此时翻译为“然而”,类似于but,when不可以,所以第一空用while,排除AB；
第二空用when更佳,用while则更强调“在...期间,一直...”.
5.B
答语是对过去发生的动作的推测,所以用“情态动词 + have done sth”结构,排除AD（“情态动词 + be sth" 表示的是现在或将来的状况）；
must have done sth的意思是“（过去）一定/肯定...”,而could have done sth的意思是“本可以/可能...”,根据句意明显选B.