题目内容
C. joined;have been D. joined;joined
() 3. My sister has learned English .
A. for twelve years ago B. since she was four
C. twelve years ago D. at the age of four
3.B
3.B
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题目内容
C. joined;have been D. joined;joined
() 3. My sister has learned English .
A. for twelve years ago B. since she was four
C. twelve years ago D. at the age of four
3.B