Now most families have only one child _____ our country’s one-child policy.
A.so B.because C.because for D.because of
—How long have you been in Beijing？
—_____
A.Five years ago. B.Since five years ago.
C.For five years ago. D.Since five years.
There are five people in the room, but I know _____.
A. both of them B. none of them
C. all of them D. neither of them
— Oh, Miss Wei. Your skirt looks nice. Is it new?
— No, I it since three years ago.
A.had B.bought C.have had D.have bought
—_____ you _____ your homework yet?
—Yes, I _____ it ten minutes ago.
A.Did; do; finished B.Have; done; have finished
C.Have; done; finished D.Will; do; finish
There is _____ pollution in the world. We must stop it.
A.much too B.too much C.many too D.too many
