独立主格~
问题描述：
独立主格~
用独立主格将句子组合成一句
a.His opponent had gained a lead of almost 200,000 votes.
b.The senator publicly conceded that he had lost his election bid.我觉得是把a 里的had gained改成gained,但是答案怎么是gaining
答
gaining不是动词.一句话只能有一个动词的,所以换成你的想法,是错误的,明白了吧
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