It worries our government a lot that the air in our city is _______than it used to be.
---Where is the supermarket? --- ______. A. Turn left and go along Center Street. B. It’s on Center Street. C. It’s between the video arcade and the library. D. A、B and C.
Which sign(标志) means “turn left”?
Please turn ___left and the library is ____ your right. A./,on B. to,/ C. on, to D in , on
Is there a library? ______. A. Yes, there isB. Yes, it isC. it isn’t D No , there is
---Do you know Mr. Smith? ---Yes. He is the man _______ has short black hair.