Be careful. Is it low enough ______ you to be able to step over it? — Sure. Thank you. [ ]

Whatyou do if you won in the lottery?

Mr Wang has lived here_____three years.[ ]

Miss Li has taught ____ English for about 3 years.—You are lucky. ____ is a very good teacher.

Excuse me, Mr Li, I don’t know the meaning of the whole sentence. What shall I do?You should _____ .