急!求助They can do a lot of work for people.划线部分提问

题目

急!求助They can do a lot of work for people.划线部分提问
划线a lot of work

答案

What can they do for people?
步骤：
1,对事提问用what,2.把原句变成一般疑问句；
3、去掉划线部分