Computer must be of great use to ____do the scientific research.

问题描述:

Computer must be of great use to ____do the scientific research.
Computers must be of great use to ____do the scientific research.
Computers must be of great use to ____doing scientific research.
分别填什么?为什么?

Computers must be of great use to(Whoever)do the scientific research.从句缺少主语,所以是Whoever.Computers must be of great use to (those)doing scientific research.doing the scientific research属于...