I like getting up very early in summer.The morning air is so good .A. to be breathedB. to

问题补充：

I like getting up very early in summer.The morning air is so good .

A. to be breathed

B. to breathe

C. breathing

D. being breathed

答案：

A. to be breathed

(答案→)B. to breathe

C. breathing

D. being breathed

解析：在“主语＋be＋adj.＋to do”句型中，动词不定式用主动形式表被动意义。