问题

How unhappy your roommate looks!—Yes, but he’s not willing to tell me what it is ________ is troubling him.

A:what
B:which
C:as
D:that

正确答案是：

同类题型

Susan didn’t like popular music very much, didshe— ___________now.

The song is sung all over the country, ______ it the most popular song this year.

How nice the fish tastes! Could you tell me who taught you to cook it — I learnt it _______watching TV. I learn to cook many dishes_______ TV.

_____ some 200 kilometers from Yangzhou to Nanjing. [ ]

I persuaded my parents ____ we should go to Italy for a holiday rather than Scotland.[ ]