The factory ________ we stayed just now is a chemistry works.
[
]A
. in that B. whereC
. which D. whoYou had better ________ eat too much butter, cream or sugar
.[
]A
. don't B. not C. not to D. to not从所给的四个选项中选择最佳答案
The room is clean ______ two desks
.[
]A
.except B.except thatC
.except for D.besides