题目内容
---Mary hasn't written to us for a long time.
---What do you suppose ______ to her?
- A.happened
- B.to happen
- C.was happened
- D.having happened
注意这里的do you suppose是主句而不是插入语。
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题目内容
---Mary hasn't written to us for a long time.
---What do you suppose ______ to her?
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