I have a letter _____ to tell the headmaster that we need a room _____.
A.to write; to live in
B.to be written; living in
C.to write; to live
D.written; to be lived in
网友回答
A解析不定式作后置定语，与所修饰的词有动宾关系，又与句中其他名词或代词有主谓关系，这时候不定式的主动表示被动意义，不定式动词不及物时要加上相应的介词，如：He is a pleasant person to work with.