Thunderstorms have struck northern China, ______ heavy rain and ______ traffic chaos.
Without more wood ____ the fire, it would soon go out.
The workers are talking about the doctors and the offices ____ they visited yesterday.
Mr. Smith was ____ to break his habit of smoking after the medical examination last month.
I prefer to eat in that restaurant, because the ____ of service there has improved a lot.
Of all _____ reasons for his decision to study abroad, his father’s advice was ____ most important one.