it is necessary that another computer center ( )on tcampus a.will be built b.be built

分类: 作业答案 • 2022-05-08 17:29:14

问题描述：

it is necessary that another computer center ( )on tcampus a.will be built b.be built
c.must be built d.has been built 选什么,为什么 ,

答

B
固定搭配,it is necessary that (should) do ..,should必须省略