题目内容
() 7. I sing very well now,but I when I was little.
A. can;can't B. can; couldn’t
C. could; couldn’t D. can;could
7.B
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题目内容
() 7. I sing very well now,but I when I was little.
A. can;can't B. can; couldn’t
C. could; couldn’t D. can;could