Why do you suggest we buy a new machine?—Because the old one has been damaged ______

112. His mother was ill yesterday, so he had to _____ a doctor.

Our city looks more beautiful!-Yes. Lots of trees and grass ______ since last year.

Smog has been troubling people a lot in many parts of China.–And now China is to reduce pollution.

Mrs Green wantsto buy that kind of cloth because she has been told that thecloth very well