The classroom is empty.They must have gone to the sports gro

The classroom is empty.They must have gone to the sports ground,_________?
A don't they B didn't they C haven't they D hadn't they

草的泪水 1年前已收到5个回答举报

607891 春芽

共回答了16个问题采纳率：87.5% 举报

1年前

SD可人儿幼苗

共回答了4个问题举报

选C，现在完成时~

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wangleijn 幼苗

共回答了903个问题举报

C haven't they

1年前

7dor 幼苗

共回答了2个问题举报

这道题must表推测，肯定选C
陈述句中的must表示一种推测时，含义为“一定、准是”时，附加谓语不用must和need，而是在意义上和陈述句中谓语动词的时态保持一致。通常有四种情况：
1．陈述部分有表示过去的时间状语，附加谓语中的动词就用一般过去时。
She must have heard the good news just now, didn’t she?

1年前

llx3618099 幼苗

共回答了5个问题举报

选A

1年前

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你能帮帮他们吗

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