题目：Tourists may spend their leisure time ＿＿＿＿＿＿＿＿ in various sports, sunbathing, taking rides or
simply ＿＿＿＿＿＿＿＿ the environment.
- A. to engage, to enjoy
- B. engaging, enjoying
- C. engage, enjoy
- D. engaged, enjoyed
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