The project requires more labor than * because it is extremely difficult.*处应该选择哪个A.has been put in B.have been put in C.being put in D.to be put in

分类: 作业答案 • 2022-04-14 11:57:17

问题描述：

The project requires more labor than * because it is extremely difficult.
*处应该选择哪个
A.has been put in B.have been put in C.being put in D.to be put in

答

A
这里的选项都省略了labor或代词it在前面
labor不可数，所以用单数

答

A,than (the labor) has been put in