The classroom is empty now. I think the students (go) ______ to the playground.

admin2009-07-28  38

问题 The classroom is empty now. I think the students (go) ______ to the playground.

选项

答案must have gone

解析 此处是对过去的情况进行肯定的猜测,用must have done的形式。
转载请注明原文地址:https://jikaoti.com/ti/nGwMFFFM
0

最新回复(0)