1.It's a little hot in the room.Will you please keep the win

1.It's a little hot in the room.Will you please keep the windows ___?
A.open B.opened C.opening [why选A不选C]
2.—I had a relly wonderful time in Beijing.It's one of the most beautiful cities in China.
—________.[why 选D不选A]
A.It's a pleasure B.Good,thank you C.Enjoy yourself D.Oh,I'm glad to hear that
3.It's very nice__you to get me two tickets___the World Cup.
A.for;of B.of;for C.to;for D.of;to [why选B不选D]
4.—What did Mr Jones do before he moced here?
—He___a city bus for over twenty-five years.
A.is driving B.drove C.has driven D.drives [why选B不选C]
5.Ann si so careful that she always goes over her exercises to___there are no mistakes.
A.look for B.make sure C.find out D.think about [why选B不选A]
6.—What's the population of China?
—China has___population of 1200 million.
A.a B.the [why选A不选B]
7.Neither of Tom's parents____to church on Sunday.
A.has gone B.have gone C.goes D.go [why选C不选A]
8.Something must be done to__young people not to smoke.
A.shutting B.to shut [why选B不选A]
9.He sent me an E-mail,___to get further information.
A.hoped B.hoping C.to hope D.hope [why选B不选C]
10.He left the meeting early because he had to___his son from school.
A.pick up B.put up C.take up D.bring up [why选A不选C]