21.[A]keep[B]feel to]put[D]remain

　　22.[A]and[B]so[C]hut[D]therefore

　　23.[A]if[B]that[C]whether[D]until

　　24.[A]task[B]achievement [D]success[D]decision

　　25.[A]without[B]with[C]by[D]to

　　26.[A]seriously[B]ultimately[C]frequently[D]actively

　　27.[A]absorbs[B]sinks[C]acquaints[D3surrounds

　　28.[A]on[B]above[C]at[D]with

　　29.[A]when[B]how[C]why[D]whether

　　30.[A]refuses[B]denies[C]invites[D]accepts

　　31.[A]his[B]her[C]our[D]their

　　32.[A]experiencing[B]following[C]performing[D]going

　　33.[A]as[B]for[C]as if[D]about

　　34.[A]why[B]when[C]how[D]where

　　35.[A]order[B]make[C]expect[D]hope

　　36.[A]He[B]This[C]That[D]It

　　37.[A]criticize[B]complain[C]talk[D]discuss

　　38.[A]express[B]speak[C]ease[D]create

　　39.[A]whenever[B]though[C]if[D]unless

　　40.[A]other[B]another[C]the other[D]others