问题
选择题
—Who helped Betty tidy up the bedroom just now?
—_________. She cleaned it all by herself.
A．Somebody
B．Nobody
C．Everybody
D．Anybody
答案
答案：B
由题干She cleaned it all by herself.可知是她自己打扫的房间，因此用B。tidy up the bedroom是打扫干净卧室的意思。help sb. do sth.帮助某人做某事。