问题
选择题
If you keep _____,You’ll be a very good swimmer one day .[ ]
A. practising to swim
B. practising swimming
C. to practise to swim
D. practise swimming
答案
答案：B
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If you keep _____,You’ll be a very good swimmer one day .[ ]
A. practising to swim
B. practising swimming
C. to practise to swim
D. practise swimming
答案：B