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75. Taiji boxing is good _____ health, so the old man began to practise it ten years ago and now he is good _____ it.

75. Taiji boxing is good _____ health, so the old man began to practise it ten years ago and now he is good _____ it.

 A.for; to                            B. to; for                      C. for; at                      D. at; for

75. Taiji boxing is good _____ health, so the old man began to practise it ten years ago and now he is good _____ it.