You can move from city to city.How about _1_ to another plan

You can move from city to city.How about _1_ to another planet!A US company now has an idea:send people to Mars _2_ 20 year.
To begin with it,the company plans to send _3_ people to go to Mars first.It will _4_ them months to get there.When they get there,they will build a _5_ first.
But Mars is not an easy place to live.It is rocky,cold and has lots of sandstorms.The temperature there is about-63 degrees Celsius.Also,there is _6_air for breath.People world have to live inside a special house.There is good _7_ in it.They world have to wear special clother if they go outside.How world people _8_ there?They will have to find useeful resources.There is CO2 in the air,iron in the rocks and water in the ice on _9_.All these could help people living there...Sounds interesting?You might want to go Mars now._10_ will things go well like the company hopes?We'll have to wait and see.
1.A.move B.moving C.moves D.to move
2.A.at B.on C.in D.to
3.A.few B.a few C.little D.a little
4.A.take B.cost C.spend D.pay
5.A.home B.room C.house D.family
6.A.no B.not C.some D.few
7.A.air B.water C.sand D.sunlight
8.A.make live B.make a living C.make living D.making a living
9.A.Mars B.the Earth C.the Sun D.the Moon
10.A.Because B.what C.though D.But

1.B
2.C
3.B
4.A
5.B
6.A
7.A
8.B
9.A
10.D