We have been excavating layers of ash almost six metres thick, which suggests that they the fire burning all winter.A．should keepB．might have keptC．should have keptD．might keep 题目和参考答案——青夏教育精英家教网—

题目内容

We have been excavating layers of ash almost six metres thick, which suggests that they________the fire burning all winter.

A．should keep

B．might have kept

C．should have kept

D．might keep

略

练习册系列答案

All the doctors in the hospital insisted that he_____ badly wounded and that he______ at once．

A．should be; be operated on	B．were; must be operated on
C．was; should be operated	D．was; be operated on

—Who______ it be that is knocking at the door?
—It ______ be Father, but I’m not sure.

You______all right now if you ____to the doctor then.

A．would be,had listened	B．would have been,had listened
C．would be,listened	D．would have been,listened

It’s nearly 7 o’clock. Helen _______ come, but let’s wait for her for another 5 to 7 minutes.

—Peter didn’t come to the meeting this morning.
— I _______ him yesterday, but I was too busy and forgot it.

. You __________ a taxi, for it was only about ten minutes’ walk to the station from the hotel.

A．mustn’t have taken;

B．mightn’t have taken;

C．needn’t have taken;

D．couldn’t have taken;

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