1. 选B)dissipateddissipate verb 1. to gradually become or make sth become weaker until it disappears （使）消散，消失；驱散2.选C)but 。not single but是“没有”的意思。3.选 D)you got rid of。It is high time (that) +虚拟语气。意思是“该到做某事的时候了。”
