Did he have to-----at that time?A went B go C goes D going
题目
Did he have to-----at that time?A went B go C goes D going
答案
1.答案:B.
2.翻译:他不得不在那个时候走了吗?
3.
固定搭配:have to do sth,即have to视为情态动词,其后加动词原形go.
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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