—Could I ride an electric (电动的)bicycle to school, Mr Wang?
— No, you ______. Students under the age of 16 _________ ride it.
A.couldn’t; mustn’t B.couldn’t; must C.can’t; mustn’t D.can’t; must
40% of the students_______ going to have lunch in that restaurant, but there is little food_________.
A.is; left B.is; leaving C.are; left D.are; leaving
The number of pandas is becoming because there are living areas for wildlife.
A. fewer and fewer; less and less B. smaller and smaller; less and less
C. fewer and fewer; smaller and smaller D. smaller and smaller; fewer and fewer
--- Oh, dear! A power cut!
--- Sorry, I didn’t know you _________ the washing machine.
A.are using B.used C.use D.were using
We should do something the animals in danger being killed.
A.to protect, from B.protect, from C.to protect, for D.protect, for
If you want to be ____ useful person in the future, you should read ____ useless books.
A.a; fewer B.a; less C.an; fewer D.an; less
