Can you imagine the difficulty I^^^
题目
Can you imagine the difficulty I^^^
Can you imagine the difficulty I had __settling___ these problems?
why "settled" can't?
答案
因为将句子还原后是I have the difficulty in doing
have difficulty/difficulties in doing sth
have (some) trouble in doing sth
这都是固定句型
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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