—The woman biologist stayed in Africa studying wild animals for 13 years before she returned. —Oh，dear!She A.may go through

a lot of difficulties!

B.might go through

C.ought to have gone through答案 D

D.must have gone through

解析 考查“情态动词+have done”。从语境分析，表示某人一定干过某事，而且是对过去情况肯定的推测，故应用must have done。C项相当于should have done表示对对方的责备，意思是“应该做而未做”，在此不符合题意。 22.(05江苏33)

—Don’t you think it necessary that he —I agree，but the problem is A.will not be sent;that C.should not be sent;what答案 B

解析 not be sent是虚拟语气，相当于should not be sent。 23.(04重庆24)

“The interest be divided into five parts，according to the agreement made by both sides，”declared the judge. A.may 答案 D

解析 考查shall的习惯用法。shall与第二、三人称名词连用，表示义务，责任，决心，许诺，它可以用于条文中；should/must用于口语中。 24.(04重庆29)

There are eight tips in Dr.Roger’s lecture on sleep，and one of them is: to bed early

unless you think it is necessary.

63

to Miami but to New York?

he has refused to.

B.not be sent;that

D.should not send;what

B.should C.must D.shall