---What time does the library open?
--- ______ eight o’clock.

We usually have a class meeting ________ Monday afternoon.

Flowers usually come out ______ spring every year.

My friend Henry was born        the morning of June 10, 1997.

–When did the earthquake of Ya’an happen?
–It happened _______ April 20, 2013.

---Where do Tom and John sit ?
--- Tom sits __________ of the room and John sits _________ of the room.

- -- What do you think of your parents?
--- They are always strict ____ our studies and they often make me ______ too much homework .

--- What is France famous _________ ?
--- Grape wine . You know grape wine is made _________ grapes.

The disabled people feel grateful _______ you ________ your help.

---It is selfless ______ the doctor to devote all the time he had ________ for the patients.
--I think so, they are so great.