My cellphone has disappeared. Who ________ have taken it away?[ ]A. could

题型：江苏同步题难度：来源：

My cellphone  has disappeared.  Who ________ have taken it away?[     ]
A. could
B. should
C. must
D. ought

答案

举一反三

You________all those clothes！We have a washing machine to do that sort of thing.[     ]
A. needn’t have washed
B. shouldn’t have washed
C. must not have washed
D. can not have washed

题型：山东省同步题难度：| 查看答案

—Sorry, I"m late.
—It"s OK. However, you________come to the company today, for it is Saturday. [     ]
A. couldn"t have
B. needn"t have
C. wouldn"t
D. couldn"t

题型：山东省同步题难度：| 查看答案

It"s hard to say what kind of person he is.Sometimes he is very friendly；at other times he________be
very cold.[     ]
A．can
B．must
C．will
D．shall

题型：山东省同步题难度：| 查看答案

________it have been the failure to pick up directions from the ground control that caused the air crash?[     ]
A．Must
B．Could
C．Would
D．Should

题型：山东省同步题难度：| 查看答案

—No one was prepared for the teacher"s questions.
—We________read the lesson yesterday evening.[     ]
A. must have
B. could have
C. should have
D. might have

题型：山东省同步题难度：| 查看答案