问题
选择题
---How old is your sister? --She is __ than I.
A．older six years
B．six years older
C．six years elder
D．older by six year
答案
答案：C
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---How old is your sister? --She is __ than I.
A．older six years
B．six years older
C．six years elder
D．older by six year
答案：C