eens are smoking in Beijing, ______ the number of primary and middle school students picking up the habit has more than doubled from previous years.

We won’t give up ______ we should fail twenty times[ ]

Must I finish the exercise at school? — No, you don’t have to. You doit at home.

It is said that Nigeria is ____ Great Britain.

Good morning, Grand Hotel.—Hello. I’d like to book a room for thenights of the 18th and 19th.— ______________.