36．I learned to play piano at the age of four．A．a(chǎn) B．a(chǎn)n C．the D．／ 【查看更多】

 

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I learned to play           piano at the age of four．

A．a(chǎn)                         B．a(chǎn)n                       C．the                        D．／

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I learned to play ________ piano at the age of four．

[　　]

A．a

B．an

C．the

D．/

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