2.An exhibition of paintings ____ at the museum next week.
问题描述：
2.An exhibition of paintings ____ at the museum next week.
A.are to be held B.is to be held C.are holding D.will hold
3.After the project ____,the engineers immediately started a new one.
A.completed B.has completed C.had been completed D.has been completed
4.We ____ for an hour when the bus finally came.
A.waited B.have waited C.have been waiting D.had been waiting
答
2.B 下周在博物馆将有一个画展
3.D 这个项目完成后工程师们马上开始了一个新项目
4.D 公交来的时候我们已经等了一个小时