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Ifyoufeeltiredandsickoffatfood,thatis

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Ifyoufeeltiredandsickoffatfood,thatis

If you feel tired and sick of fat food, that is ________ you have to go to the hospital for medical examination.


A. why                         B. whether           C. when                  D. what

【回答】

C

知识点:主语从句

题型:选择题

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