问题

This is certainly the case, but ____ it is a mistake or not I don’t know.

A:if
B:even though
C:whether
D:that

正确答案是：

同类题型

(2013·滨州市一模) ________ contents, Mo Yan frequently writes about his own hometown, Gaomi, Shandong Province

Let’s go shopping, shall we?— Wait a minuteI ________ my housework and it won’t take long

Is Tom at home?No, he_______ to town.

tective, ______ to be reading a newspaper,glanced at the man_____ next to a woman

How much shall I pay for the phone call? — You ________. This is free of charge.