题目内容
We worried about ______ he was in good health.
A. whether B. if C. that D. what
A
解析:
我们担心他是否健康。介词的宾语从句只能用whether引导,不能用if。
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题目内容
We worried about ______ he was in good health.
A. whether B. if C. that D. what
A
我们担心他是否健康。介词的宾语从句只能用whether引导,不能用if。