We go to school _____ Monday _____ Friday. [ ]
A. from, in
B. from, to
C. from, at
答案:B
—It's the computer room! So you ____ know smoking is not allowed here.
—Oh, sorry.[ ]
A. must
B. can
C. may
D. need
氧化锌避雷器应尽量靠近变压器安装。