To be on the safe side, we should fill up the tank now, because we ______ run out of gas on the way.
A. can B. would C. might D. should
There used to be a small school,___________?
A. was there B. wasn’t it C. usedn’t there D. usedn’t it
The two strangers talked as if they ____ friends for years.
A should be B would be C have been D had been
—Mum, I’ve been studying English since 8 o’clock. ____ I go out and play with Tom for a while?
—No, I’m afraid not. Besides, it’s raining outside now.
A. Can’t B. Wouldn’t C. May not D. Won’t
—What does the sign over there read?
―“No person ______ smoke or carry a lighted cigarette，cigar or pipe in this area．”
A．will B．may C．shall D. must
— I heard they went skating in the mountains last winter.
— It _____ true because there was little snow there.
A. may not be B. won’t be C. couldn’t D. mustn’t be
