It was strange that he ____(break) off in the middle of the sentence
题目
It was strange that he ____(break) off in the middle of the sentence
答案
break
It is +strange /important ……that sb (should) do sth.
should 可以省略.表示竟然…….
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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