问题

s, Mark, what is the cause of the American Civil War—Well, is it _______the black slaves wanted freedom

A:how
B:why
C:because
D:when;

正确答案是：

同类题型

When the book, Twilight, was first _____, it was immediately well received by readers. [ ]

Had I known her name，I________.[ ]

Where is Lily, Lucy? I cannot find her anywhere.— She have been off long. I saw her clean the window just now.[ ]

观察下面4个选项,从中选出不同类的选项。

________ is the population of your city， Ben— I’m not sure. But I know it’s getting _______ now.