i would have told him the answer,but i______so busy then.a.am b.were c.was d.would be 选什么...
题目
i would have told him the answer,but i______so busy then.a.am b.were c.was d.would be 选什么...
i would have told him the answer,but i______so busy then.a.am b.were c.was d.would be 选什么?为什么?
答案
我该告诉他答案,但当时我太忙了.选C ,一般过去时.
选A为一般现在时不对,B不对,D过去将来时也不对.
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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