钟南山被认为是中国最好的医生之一.
Zhong Nanshan is one of the best doctors in China.
He did (badly) among the students in his class.
By the time I got to the cinema,the movie (begin).
She shouldn't (allow) to go out alone.
Mr.Green hates (travel) by air.He always falls asleep during the flight.
There are many ( different) between them.