—I think it’ s going to be a big problem. —Yes, it could be. I wonder______we can do about it.

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问题 —I think it’ s going to be a big problem. —Yes, it could be. I wonder______we can do about it.

选项 A、if
B、how
C、what
D、that

答案C

解析 本题考查语境和疑问词的知识。根据句子结构,及物动词do缺少宾语,可排除A和B;that在宾语从句中不充当句子成分;what正好可作do的宾语。
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