When I entered the step-classroom (阶梯教室), the lecture __________ and the audience __________ attentively.
Chen Yifei(1946-2005),who died in his ________ fifties,was ________ successful artist.
We'll have to wait a ________ two weeks to know the examination result.
Sometimes the same word has ________ meaning,which can be ________.
China is ________ country in Asia.That is,it is larger than ________ country in Asia,and it is larger than ________ country in Africa.
________ students are required to take part in the boat race.