If there are ____trees, the air in our city will be ____cleaner.
A.fewer, much B.more, more C.more, much D.much, more
Before the police , the alien left the shop .
A.got B.reached C.arrived D.arrived at
We didn’t know the good news ______ he told us.
A.after B.or C.because D.until
There _________ a computer in everyone's house in the future.
A.will have B.will has C.will be D.is
My sister can’t cook, I can’t, ________ .
A.too B.also C.either D.neither
Please give me ________envelope, I want to write a letter to my father.
A.a B.an C.the D./