问题
选择题
Do you know what ___ while you were away from home?
A．had happened
B．was happened
C．has happened
D．happened
答案
答案：D
what happened（发生了什么事），动作发生在过去，所以用一般过去时。
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Do you know what ___ while you were away from home?
A．had happened
B．was happened
C．has happened
D．happened
答案：D
what happened（发生了什么事），动作发生在过去，所以用一般过去时。