The question asked by him is hard ________.
The question asked by him is hard ________.
A.to answer
B.to be answered
C.answering
D.for answer
答案及解析： A
解析：
导解：某些形容词，如hard，difficult，easy，interesting之后，动词不定式与主语构成动宾关系时，须用其主动形式．
The question asked by him is hard ________.
A.to answer
B.to be answered
C.answering
D.for answer
答案及解析： A
解析：
导解：某些形容词，如hard，difficult，easy，interesting之后，动词不定式与主语构成动宾关系时，须用其主动形式．