1. -- “How many days?”
0 -- “Did you say that five days _C_ required to complete that work?”
A are B were C was D is
2. Many an airplane _B_ in the exhibition.
A are shown B has been shown C has shown D show them
many a(an) 很多,相当于many; many a(an) + 可数名词单数,做主语时谓语动词用单数。
3. Not only Joan but her sisters _B_ the combination to the safe which contains the list of the family securities.
A have known B know C knows D is knowing
not only … but also … 的一种变形形式,not only … but …
4. She ought to stop work; she has a headache because she _A_ too long.
A has been reading B had read C is reading D read
had read 过去完成时要与一般过去时搭配。
has been reading 现在完成进行时:指某行为从过去一点到现在一直在进行。
5. I don’t mind _B_ the decision as long as it is not too late.
A you to delay making B your delaying making
C your delaying to make D you delay to make
mind 后要加动名词; delay v. 耽搁,延误(后面也要加动名词)