A.realize | B.recognize | C.research | D.reserve |
A.will be repaired | B.is repaired | C.is being repaired | D.has been repaired |
A.should we | B.we should | C.it we should | D.it is we should |
A.a; the | B.不填; the | C.a; 不填 | D.不填; a |
A.suffer | B.suffered | C.being suffered | D.suffering |
A.chance | B.change | C.challenge | D.challenger |
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