【动词不定式语法选择题.关于主动表被动的、——Didthejudgeaskyoumanyquestions?——Yes,and___.a,theyweredifficulttobeansweredb,toanswerthemwastobedifficultc,theyweredifficulttoanswerd,theyhaddifficultyinansw】

　　动词不定式语法选择题.关于主动表被动的、

　　——Didthejudgeaskyoumanyquestions?

　　——Yes,and___.

　　a,theyweredifficulttobeanswered

　　b,toanswerthemwastobedifficult

　　c,theyweredifficulttoanswer

　　d,theyhaddifficultyinanswering

　　答案是c,为什么不用a问题不是被回答的吗?如果是主动表被动,想问一下什么时候用主动表被动.（最好说通俗点,不要说一大串专业的什么）