The room is in a terrible mess, it _____ have been cleaned. [ ]A. can"t B. m

题型：浙江省模拟题难度：来源：

The room is in a terrible mess, it _____ have been cleaned. [ ]
A. can"t
B. mustn"t
C. shouldn"t
D. wouldn"t

答案

举一反三

For the engine to work, the green button _____ be in the "on" position. [ ]
A. can
B. would
C. must
D. might

题型：北京期末题难度：| 查看答案

Sometimes we _____ be busy shopping in a supermarket, for it"s more convenient to purchase online nowadays. [ ]
A. needn"t
B. mustn"t
C. shouldn"t
D. can"t

题型：四川省模拟题难度：| 查看答案

— Is Jack on duty today?
— It ____ be him; it"s his turn tomorrow. [ ]
A. mustn"t
B. won"t
C. can"t
D. needn"t

题型：黑龙江省模拟题难度：| 查看答案

In fact you ____ outside by taxi. My car was here. [ ]
A. couldn"t go
B. mustn"t have gone
C. needn"t have gone
D. needn"t go

题型：河北省期末题难度：| 查看答案

Some young people these days just ____ go out of their homes to contact the real world. [ ]
A. mustn"t
B. won"t
C. mightn"t
D. shouldn"t

题型：上海高考真题难度：| 查看答案