Who___(speak) at the meeting yesterday?
题目
Who___(speak) at the meeting yesterday?
He often hears his neighbour___(sing)in the morning
I saw the girl__(shop)with her mother when I___(drive)past last night
答案
纠正楼上第二题,由于出现了Often,所以他是经常听见邻居在唱歌,所以用
Hear sb do
所以是sing
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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