问题

Tom, it seems that you haven’tcleaned your bedroom the whole week .—You didn’t come in around 10 yesterdaymorning; I ________ it .

A:Having taught
B:have cleaned
C:was cleaning
D:had cleaned

正确答案是：

同类题型

Our manager bought a ________ car.

Students should do everything they can __their study.

We find ______ impossible for us to learn a foreign language well in a short time.

May I smoke in the room? –No, you______________. It’s a non-smoking room..

下列各句中，没有语病且句意明确的一句是（）（）