6.The local government cut down their costs ______ 30 percent.
A. at
B. by
C. for
D. with
7.I'm reading his ______ novel.
A. best-selling
B. best-sold
C. best-sale
D. best-sell
8.It's rude of you to shout _______ the room.
A. beyond
B. through
C. across
D. over
9.People are more likely to stay _______ 30 miles of _______ they were born.
A. in … where
B. at … what
C. within … what
D. within … where
10.After searching for half an hour, she realized that her glasses ______ on the table all the time.
A. were lain
B. had been lain
C. have been lying
D. had been lying
