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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:初中英语 来源:江苏期末题 题型:单选题

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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