单项选择题
A.turn down it B.turn it down C.turn off it D.turn it up
The public store is to close at 9:30 p.m. （）no need to ...
单项选择题The public store is to close at 9:30 p.m. （）no need to worry; it is just 7:30 p.m.
A.You have B.They have C.It is D.There is
The population of the earth（）increasing fast.A.isB.areC...
单项选择题The population of the earth（）increasing fast.
A.is B.are C.were D.have been
The plane was about to（）, and yet I left my ticket behi...
单项选择题The plane was about to（）, and yet I left my ticket behind.
A.take off B.take onC.take up D.take in
