英语-根据括号中的单词填空,正确答案已经给出（括号后面）,请说明每道题的原因

英语-根据括号中的单词填空,正确答案已经给出（括号后面）,请说明每道题的原因
26.Winning three gold medals is the most remarkable(achieve) achievement he has made so far.
27.In order to deal(effctive) effectively with the frequent railroad accidents,a special committee has been set up.
28.Generally,the front page of newspapers(devote) is devoted to the most important news of the day.
29.In addition to the(require) required courses,there are still some other courses to be individually chosen.
30.These scientists are interested in (find) finding out how short-term memory becomes long-term memory.
31.The sales manager asks his men every week (inform) to inform him of everything concerning sales.
32.If you want to be (success) successful in life,you should be honest and self-confident.
33.The engineer put forward a (suggest) suggestion at the meeting to improve the public traffic system.
34.Once the payment has been made,the goods should (deliver) be deliver in one or two days.
35.In the past decade email (become) has become one of the most popular means of communication.