问题补充:
When we climbed up to the top of the mountain, we were all .
A. out of the breath
B. short of the breath
C. out of breath
D. short of breaths
答案:
A. out of the breath
B. short of the breath
(答案→)C. out of breath
D. short of breaths
解析: 考查短语:out of breath气喘吁吁的,上气不接下气的,句意:当我们爬到山顶的时候,我们都气喘吁吁的。故选C。