问题

Some tourists’ visiting Tian’anmen Square during the holiday left a ________ of litter everywhere they went.

A:trail
B:dot
C:chain
D:track;

正确答案是：

同类题型

Teachers will hardly use chalk in the future, ______

Theof the students in our classgirls.

Had we been more careful, the accident might not have happened— But we _____ at that time

I’m sorry! I would have taken him to hospitalif I had known he was seriously ill— But ______

______ the rising rent prices in Wuhas