Thedoctorbeganfeelinginactiveandpowerlessacoupleof...
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问题详情:
The doctor began feeling inactive and powerless a couple of days ago, but not until he developed 100.3-degree fever ______ Doctors Without Borders, authorities said.
A. had he contacted B. he had contacted
C. did he contact D. he contacted
【回答】
C
知识点:倒装与省略
题型:选择题
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