As a rough estimate, Nigeria is _______ Great Britain.
The number of traffic accidents caused by drinking is ____ as the number of those caused by non-drinking driving.
In China ______ graduates go abroad to have a further study every year .
----- Where did you get to know her?---- It was on the farm _______ we worked.
——I’m sorry , but there’s no smoking on this flight .——Oh, I _______that .Sorry , I won’t again .
—— It seems that his health is improving.—— Yes.It is ten years ______ he _______.