1．Something must be done to prevent our city from being polluted(污染) by thick smoke.
2．The train went slower and slower until it stopped altogether．
3．A new man was appointed to handle(处理) the crisis.
4．When presenting a speech in public，don't be nervous.
5．The shop is newly open，and goods in it sell at a discount(打折)．
6．Hainan Island attracts visitors not only in winter but also in summer.
7．The real voyage of discovery(发现) consists not in seeking new landscapes but in having new eyes.
8．Don't measure your success next to someone else.Decide what you want for you and do that.
9．Be sure to set aside at least an hour a day for sports.It will make you healthy and energetic(精力充沛的)．
10．Films and TV series ought to educate the young but not to ruin them.
