Many doctors plain that they don’t have working hours, for they have to wait for patients all day long in the hospital.
A. particular
B. specific
C. flexible
D. adequate
网友回答
A. particular
B. specific
(答案→)C. flexible
D. adequate
解析：形容词辨析。A特殊的;特定的;特别的；B特殊的,特定的；C灵活的；D充分的，足够的；句意：很多医生都抱怨他们没有灵活的工作时间，因为他们不得不整体在医院等待病人。