The parents have been watching their son____the wall of the house.
题目
The parents have been watching their son____the wall of the house.
A. painting
B.painted
C.being painted
D. go paint
答案
选A.
watch sb doing sth 看着某人正在做某事.
家长看着他们的儿子粉刷墙壁.
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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