问题
He smiled politely ______ Mary apologized forher drunken friends.
A:as
B:if
C:unless
D:though
B:if
C:unless
D:though
正确答案是：
同类题型
Millie often helps Sandy _______ her Physics, and she also shares his school things _______ her.
What’re the rules in class —First, mobile phones can’t be ______.
Is the film interesting—I thought it would be. But ______, it’svery boring.
How about going hiking this weekend——Sorry, I prefer _____ rather than _____.