He spends half an hour ______ the piano.

A. to practise playing
B. practising playing
C. practising to play
D. to practise to play
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科目：初中英語 來源：江蘇期末題 題型：單選題

He spends half an hour ______ the piano.
[     ]
A. to practise playing
B. practising playing
C. practising to play
D. to practise to play

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