初二英语,请英语高手进!

My mother asked me_______(help) her ______(clean) the room.
第一个填to help 第二个填clean
没为什麼，固定短语 ask sb.to do sth.
help sb. do sth.

to help;clean
解释：
ask sb to sth
help sb do sth

to help; clean
短语:
ask sb. to do sth.
help sb. do sth.

to help
(ask sb. to do sth)
to clean\clean
(help sb. to do sth.\help sb. do sth.)

答案：to help
to clean
解释：make sb to do sth

to help
clean
ask sb to do sb 还有 help sb do sth 两个短语结构！