--How long are you staying ? -- I don’t know . ______.
If you_______ my advice last month, you wouldn’t have lost his job.
Mr.Smith is the only one of those foreigners who ______ in China.
----Why didn’t you go to the concert ? -----I ____a game between two American basketball teams
________see the children before they went to bed, he came home early
The reason ______he was late was _____he got up late