the elevator is a wonderful invention.
it's only a small room.rooms usually stay in one spot,but elevators __ up and down all day long.
sometimes a worker stands in an elevator.he __ it up and down.in modern elevators there are no workers.people walk into the elevator.they know __ floor they will go to,they push a button themseves and the elevator goes up to that floor.it's easy and __.
elevators are very important to us.why?__ a tall building with twenty floors.maybe it has thirty or __.who can walk up all the stairs?maybe some people can climb them once.can someone climb thirty __ to his office every day?can people __ lots of food and vegetables ip to the 24th floor?of course not!
we can have tall buildings in the world __ elevators.they are really a great invention.
1.use open travel drive
2.lifts operates sees shoots
3.whose how where which
4.slow fast boring hard
5.escape from fix up think about worry about
6.less much few more
7.stops miles floors rooms
8.carry bring fetch sell
9.but so because or
10.with without have haven't
最有一段改
we can have tall buildings in the world __ elevators.there will be no high buildings in the world ___ elevators.they are really a great invention