题目内容
—Why are your eyes so red? You _______ have slept well last night.
—Yeah, I stayed up late writing a report.
| A．can’t | B．mustn’t | C．needn’t | D．won’t |
A
解析试题分析：考查情态动词+完成式的用法：本题考查情态动词表推测的用法。句意：——你的眼睛为什么那么红？昨天你不可能睡好。——我熬夜到很晚，写一份报告。A. can’t have done过去不可能做了，B. mustn’t 表示推测用于肯定句中， C. needn’t have done本不必做而做了，D. won’t have done将不会已经做了，答案 A。
考点：考查情态动词+完成式的用法
A survey has shown that 40% of those killed in traffic accidents _____ if they had been wearing seat belts.
| A．should have been saved | B．must have been saved |
| C．need have been saved | D．could have been saved |
Being constantly exposed to advertisements is annoying, but it ______ be pleasant sometimes.
| A．shall | B．need | C．can | D．must |
We have hurried all the way to the airport - the flight was called off because of the foggy weather．
| A．mustn’t | B．couldn't | C．needn’t | D．wouldn’t |
-–Mary knows the city quite well.
--She______ well have been there before.
| A．need | B．could | C．should | D．may |
— Who is absent from the lecture today?
—_____________you ask? Peter, of course.
| A．Would | B．Can | C．Could | D．Need |
I want to open the door, but it _____ open.
| A．couldn’t | B．won’t | C．wouldn’t | D．mustn’t |
--Is Professer Smith giving the speech today?
--It ________ be him. He is abroad right now.
| A．mustn't | B．needn't |
| C．won't | D．can't |