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

问题补充：

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

A. to be breathed

B. being breathed

C. breathing

D. to breathe

答案：

A. to be breathed

B. being breathed

C. breathing

(答案→)D. to breathe

解析：句意：我喜欢夏天时早起，好呼吸早晨的新鲜空气。这里sth be +形容词+ to do 当主语的sth同时又是不定式的逻辑宾语时，这时不定式用主动形式。故选D。