问题
选择题
Only after I read the text over again _____ its main idea. [ ]
A. that I knew
B. did I know
C. I could know
D. I did know
答案
答案：B
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Only after I read the text over again _____ its main idea. [ ]
A. that I knew
B. did I know
C. I could know
D. I did know
答案：B