这首迷人的民歌深受学生的喜爱，尤其是女学生。（popular）
据报道，1998年中国很多地区发生了严重的水灾。（occur）
充分利用时间并不意味着从早到晚不停地看书。（keep）
他在实验中多次失败，但他相信失败是成功之母。（fail）
你及时通知我那件事，真事考虑得太周到了。（inform...of）
在过去得几年里，这家工厂用塑料代替木头来降低成本。（substitute...for）
參考答案:1:This folk song is deeply welcomed among students,especialy among the girl students.
2:It was reported that grave floods occured in many Chinese areas in 1998.
3:Fully using time does not mean keeping on reading a book from morning to evening.
4:He fails many times in the experiment, but he believe in Failure is the mother of success.
5:You have informed me of the matter , it have been really to think very thoughtfully in time.
6:In the past years this factory substitute plastic for wood to low the cost.
(最后一句替换是前还是后忘了．．．．．）
