16. I prefer A. doing swimming to going fishing in summer. B. to do C. going 17. Many people are fond of tea or coffee in the morning. A. drinking B. drink C. drinks D. to drink not only connects family members but also helps people protect 18. environment. A. Gardens B. Gardener 19. When gardening, children A. learn B. teach 20. I hope Mary will teach me A. when B. how D. to go C. Gardening D. Garden to be patient and take on responsibility. C. study D. must to carve eggshells. C. what D. why