A．For theB．ThisC．As aD．A

______ is quite difficult for Mary to pass the interview.A．WhatB．ThisC．ThatD．It

I suggested he should______ himself to his new conditions as soon as possible.A．changeB．ad

【C7】A．TheB．AnC．AD．Any

55._________A. theB. /C. aD. an

59._________A.For theB.ThisC.As aD. A

设有文法G[S]为： S→AB｜bC A→ε｜b B→ε｜aD C→AD｜b D→aS｜c 则FO