一直都很困惑比如这题,it's high time we ___ a rest.A have B had C a

你好

It is high/about time that 正是干……的时候了high/about 只是对time 强调
从句谓语动词要用过去式或用should加动词原形,但should不可省略.
例如

It is time that the children went to bed.

It is high time that the children should go to bed.

综上所诉, 上题答案为B和D



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