Question

(2005安徽省)

--- How about going out for a walk with us?

--- I wish I could, ________ I have to finish my homework first.

[　　]

A．and

B．so

C．but

D．or

Answer 1

答案：C
解析：

这是对邀请的婉言拒绝，应用but表示前后转折关系。