题目内容
-I haven’t heard from him for a long time.
-What do you think ________?
[ ]
A.was happening
B.to happen
C.having happened
D.has happened
答案:D
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题目内容
-I haven’t heard from him for a long time.
-What do you think ________?
A.was happening
B.to happen
C.having happened
D.has happened