选择People will use robots.,.the housework in the future.

问题描述:

选择People will use robots.,.the housework in the future.
People will use robots.,.the housework in the future.
A.do B.to do,c.doing D.to doing
选哪个,为什么?,参考答案是C.

robot 是宾语 doing the housework 是宾语补足语
主动关系,动词用ing形式(机器人做家务,不是被做家务)
如果是被动关系,就要用ed形式