. They out because the light’s on. Let’s go upstairs and have a look. A. mustn’t go B. can’t have gone C. couldn’t go D. might have gone 题目和参考答案——青夏教育精英家教网—

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They ___ out because the light’s on. Let’s go upstairs and have a look.

A. mustn’t go B. can’t have gone C. couldn’t go D. might have gone

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They were surrounded by the enemy, but finally they _____ out of the encirclement.

A．managed breaking	B．tried breaking
C．managed to break	D．tried to

They ___ out because the light’s on. Let’s go upstairs and have a look.

A．mustn’t go

B．can’t have gone

C．couldn’t go

D．might have gone

--They ________ out the problem, but failed.

--What a shame ! I never thought it was going to happen like that.

A. managed to work B. managed working

C. sought working D. sought to work

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