your father is at a meeting为什么要加at和用ing形式啊
your father is at a meeting为什么要加at和用ing形式啊
your father is at a meeting your father ___ ____a meeting
at的后面为什么要加动词的ing形式
There is someone knocking at the door.为什么用“knocking”,要加“ing”
your father is at here
Look at the kites __(fly) in the sky.为什么要用ing形式啊
Laughing at others is not good laugh为什么加ing?
Does your father singing?sing为什么要加ing?
have a meeting和hold a meeting上什么意思?为什么meet加ing?
May I have a look(at)your notebook?这里为什么要填at?要讲题形式,快
Bob is good at speaking English.speaking为什么要加ing.急
I think staying at home is really boring 中stay为什么要加ing?