①He fell behind the others.②Why don't you go by bus?改为同义句

问题描述:

①He fell behind the others.②Why don't you go by bus?改为同义句
①He fell behind the others.改为同义句
He couldn't _____ ______ with the others.
②Why don't you go by bus?改为同义句
______ ______ ______ by bus?

he didn't catch up with the others他没赶上别人
why not go by bus如果①He fell behind the others.改为He couldn't _____ ______ with the others.那怎么改catch up 不能赶上别人