问题

We________on this project for four hours.Let’s have a rest

A:are working
B:have been working
C:worked
D:had worked

正确答案是：

同类题型

Please do something for the Hope Project, _______many children in poor areas will be able to go back to school

Have you　　your applicationform,Janet—Not yet.

This is the last time that we _____ late for class.[ ]

He hurried to the booking office only______ that all the tickets had been sold out

In order to make the policeman believe her, she ________a story.