The important task will take Peter and me about four months to complete, so it will be a long time _____ we meet you again.
There are many ______ TV programs about the Beijing Olympic Games. You can choose any you like and enjoy it.
---Whose advice do you think I should take? --- ________ .
My uncle has a lot of books, _______ are about computer science and technology.
He, along with his brothers, ______ how serious the situation is.
This is the factory ________ we visited last Monday.