If they had known what was coming next, they __ their mind.A．may changeB．could c

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If they had known what was coming next, they __ their mind.

A．may change

B．could change

C．must have changed

D．might have changed

答案

解析

考查情态动词。if引导的条件状语从句与过去是相反，主句中要用would/should might have done. 而must have done表示一定已经做了某事。

举一反三

--- Mary had a traffic accident and has been sent to the hospital. Did you tell her boss about it?
--- Yes, but I _____ her husband first.

A．should have told	B．shouldn’t have told
C．must have told	D．needn’t have told

题型：不详难度：| 查看答案

--- What have you learned from your experience in Japan?
--- Well, meeting people from another culture ___ be very difficult.

A．must

B．can

C．should

D．shall

题型：不详难度：| 查看答案

They urged that the library_______ open during the vacation.

A．must be kept	B．is kept
C．would be kept	D．be kept

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I ______ to go on a diet, but the dishes at the party were simply impossible to resist.

A．had intended

B．am intending

C．intend

D．could intend

题型：不详难度：| 查看答案

--- Did you go to her birthday party held the day before yesterday?
--- I ____, but something unexpected happened at my home.

A．intended	B．had intended to
C．had intended to go	D．intended to go

题型：不详难度：| 查看答案