—How many women doctors are there in your hospital?
—        them         over twenty.

—Could you tell me the way        the railway station?
—Go along this road and soon you’ll find it.

——你们医院那儿有多少女医生？
——女医生数量超过二十个。
—How many women doctors are there in your hospital?
—The number of them ____ over ____.

         the bus driver and the passengers, the doctors saved the man in time.

我们必须遵守交通规则。
We must follow ____  ____。

空气污染是现代社会最大的问题之一。
Air ____ is one of the greatest ____ in the modern world.

他已经喂过他的宠物狗了。
He’s already fed his ____ dog.

David visited lots of        in the world.

根据提示填空（每空一词）
他喜欢各种各样的书。
He likes all ____ ____ books.

Don’t worry. You have        time to catch the train.