问题补充:
I’m so busy today that I can’t the house.
A. help cleaning
B. help cleaned
C. help to clean
D. helped clean
答案:
A. help cleaning
B. help cleaned
(答案→)C. help to clean
D. helped clean
解析:考查词组:句意:我今天太忙了,不能帮助打扫房间。Can’t help do sth不能帮助做…,can’t help doing情不自禁做…,选C。