单项选择题
The radio is too noisy, please（）.
A.turn down it B.turn it down C.turn off it D.turn it up
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.
单项选择题 The population of the earth（）increasing fast.
单项选择题 The plane was about to（）, and yet I left my ticket behind.
