The customers often complained ___they have bought from that shop
题目
The customers often complained ___they have bought from that shop
that
which
what
where
答案
what
先看从句thay have bought from that shop 不是一个完整的句子,所以应该用which,但是complain 少一个介词about(complain about是固定搭配）
所以要选what(what=about which)
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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