题目内容
The doctors did all they save the boy.
A. could B. could to C. could to do D. could do
答案:B
解析:
解析:
这是一个有省略成分的句子。在情态动词could后省略了do。
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题目内容
The doctors did all they save the boy.
A. could B. could to C. could to do D. could do
这是一个有省略成分的句子。在情态动词could后省略了do。
|