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OnlyafterIreadthetextoveragainitsmainidea.[]A.thatIknewB.didIknowC.IcouldknowD.Ididknow

题目详情
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
▼优质解答
答案和解析
B