You must have been caught in the traffic jam yesterday, ______you?
A．weren’t B．didn’t C．mustn’t D．haven’t
----I’m sure Andrew will win the first prize in the final.
----I think so. He ______for it for months.
A. is preparing B. was preparing
C. had been preparing D. has been preparing
Better wear special clothing, a helmet and a life jacket, just ______ your raft gets upside down or even sinks.
A．in case B．so that C．as though D．in order that
I found that the homework was ______ I used to get in my old school.
A．not heavy as what B．as not heavy as that
C．not as heavy as that D．not as heavy as what
Though the medicine for my disease______, I should often______ at home or in the open air.
A．works out; work out B．is working; work out
C．is working out; work D．works; work
We’ve booked a room in the center of town for the guests ______they can stay for three days.
A．when B．which C．where D．whom
