学校商店运来4500本练习本,卖了14天后,还剩下594本。平均每天卖多少本?
(4500-594)÷14=279(本)
We are going to invite our friend our house.[ ]
A. in
B. at
C. to
Mrs. Green wants to buy that kind of cloth because she has been told that the cloth very well.
A.washes
B.is washed
C.has been washed
D.is washing