I ____ him the answer ____ possble.,but I was so busy then.
题目
I ____ him the answer ____ possble.,but I was so busy then.
A.could tell,if it had been
B.must have told,were it
C.should have told,had it been
D.should have told,should it be
答案
C:should have done表示本应该做某事(而没做)had it been应该是if it had been, 但是前面用的是虚拟语气,这个后面的句子应该用倒装句,所以改为had it been.也表示虚拟.这句话翻译为: 如果当时可能的话,我本应该...
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
最新试题
热门考点