Our teacher said three years ____really short.( )[说理由] A is B was c are D were
题目
Our teacher said three years ____really short.( )[说理由] A is B was c are D were
答对有奖赏
答案
选择B,当主语是时间的时候,即便是复数形式谓语动词也只能用单数,因为该成分所在的句子在整句话里做宾语从句,要与主句的 时态保持一致
举一反三
已知函数f（x）=x，g（x）=alnx，a∈R．若曲线y=f（x）与曲线y=g（x）相交，且在交点处有相同的切线，求a的值和该切线方程．
我想写一篇关于奥巴马的演讲的文章,写哪一篇好呢?为什么好
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