21．for my part ,from my own perspective 替换 in my opinion.

　　22．There are several reasons behind sth 替换reasons for sth.

　　如果bad做表语，可以有be less impressive替换.

　　23．shared 代 common.

　　24．reap huge fruits 替换get many benefits .

　　25．beneficial, rewarding替换helpful.

　　26．desire 替换want.

　　27．individuals,characters, folks替换people ,persons.

　　28．positive, favorable, rosy （美好的），promising.

　　（有希望的），perfect, pleasurable , excellent, outstanding, superior替换good.

　　29．dreadful, unfavorable, poor, adverse, ill （有害的）替换bad.

　　30．shopper,client,consumer,purchaser, 替换customer.