Why doesn’t Jim have his hair cut–I know______.Perhaps he thinks it looks cool.

Go______ the street, walk _______the post office,and_______ the street, and you will see the book shop in front of you.

__________——– Yes， I’d like the new dress. Please show me the green one

The importance of saving gas________be stressed too much.Automobiles use up some 70 billion gallons of gas a year.[ ]

－Dirty water shouldn’t be poured intorivers.－_______. It will cause pollution.