-----You( )part in the party in time
题目
-----You( )part in the party in time
-----Sorry I was delayed by the accident
A.are supposed to take
B.have supposed to
C.are supposed to have taken
D.supposed to take
how to choose?and please tell me why...thank you~
答案
选c.be supposed to 本应该,接完成时表应该却没有.
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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