问题

Believe it or not, my sister and I are twins.— Oh, you must have had the case _________ you were taken for your sister.

A:which
B:whose
C:where
D:when

正确答案是：

同类题型

Scientists are warning that ________ emissions of carbon (碳排放) are cut, we could be heading for an environmental disaster

Chatting online can be _____fun, but kids must be sure they stay safe on _____web.

Do you mind______________ here

The good thing about children is that they ________ very easily to new environments.

含有相同元音音素的一项是。