单项选择题
A.was telling B.was told C.could tell D.would tell
The medicine （） cool, clean and dry.A.must keepB....
单项选择题The medicine （） cool, clean and dry.
A.must keep B.must be kept C.must be keep D.must be in
“Must we start the experiment now?” “No, you （）.”A.won...
单项选择题“Must we start the experiment now?” “No, you （）.”
A.won’t B.needn’t C.can’t D.may not
He keeps（）at himself in the mirror.A.to look B.lookin...
单项选择题He keeps（）at himself in the mirror.
A.to look B.looking C.look D.looked
