I’ve been playing the piano for four hours and I am it.A. tired ofB. tired inC. tired onD

问题补充：

I’ve been playing the piano for four hours and I am it.

A. tired of

B. tired in

C. tired on

D. tired through

答案：

(答案→)A. tired of

B. tired in

C. tired on

D. tired through

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