—Nathan likes his job because he ______enjoy the beauty of nature.
A.can B.must C.should D.is supposed to[来
—The scarves are all beautiful.I can’t decide which one to choose.
—Oh，look at this red one.I think it’s______.
A.beautiful B.more beautiful C..the most beautiful D.less beautiful
—Ben and Sue aren’t home，are they?
—No.They _____to London on business.
A.have gone B.go C.have been D.will go
There are lots of _____that students have to follow in school.
A. exercises B. problems C. skills D. rules
Fresh food is good for you . But you have to _______it first because sometimes it a little dirty.
A. taste B. smell C. wash D. plant
Ther will be less pollution ___more people use public transportation .
A. but B. though C. unless D. if
