We have to go now.They ( )(wait)for us at the bus stop括号里填wait的什么形式
问题描述：
We have to go now.They ( )(wait)for us at the bus stop括号里填wait的什么形式
答
They ( are waiting )(wait)for us at the bus stop
答
are waiting 现在进行时
答
过去完成进行时，They have been waiting for us at the bus stop.
答
are waiting
答
are waiting
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