There are many sports lovers in his office.Some love climbing others enjoy fishing.A. or

问题补充：

There are many sports lovers in his office.Some love climbing, others enjoy fishing.

A. or

B. for

C. while

D. so

答案：

A. or

B. for

(答案→)C. while

D. so

解析：while 除了有“与……的同时”外，还有两种含义要掌握：一是表示“对比”的意思，另一是本题的含“让步”的意思，“尽管”、“虽然”。