to make a speech, he said he would be glad to.A. When askedB. When askingC. When he was a

发布时间：2020-08-17 05:48:26

     to make a speech, he said he would be glad to.
A. When asked
B. When asking
C. When he was asking
D. When to ask

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(答案→)A. When asked
B. When asking
C. When he was asking
D. When to ask
解析：考查状语从句的省略，在含有状语从句的复合句中，若从句的主句是it或与主句的主语相同，且在谓语中含有be时，常省略从句的主语和be。句子意思：当他被要求做演讲时，他说他会很乐意的。完整的句子是When he was asked to make a speech, he said he would be glad to.主从句的主语都是he，可以省略从句的主语和be动词，剩下asked，选A。
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