I have many friends, _______ some are businessmen.
I don’t like ____you laugh at her.
---- What do you think of Tom’s playing football. ------ I think he plays football ______ , if not better than, Jack.
----- I’m sorry I’m late. I got held up in the traffic on my way here. ----- ___________
Only when he reached the tea-house ______ it was the same place he’d been in last year.
Grammar mistakes of this kind _____ widely among Chinese students.