A. methane B. poster C. feel like D. of all ages A. boredom B. thanks C. rashly D. save A. collapse B. hand-made C. wreath D. waste A. strictly B. themselves C. earth D. homestay A. trapped B. protect C. rough D. disappointing A. raincoat B. icy C. hear from D. useful A. translate into B. tricycle C. project D. snout A. cut down B. shut C. rock climbing D. slip A. narrow B. rambling C. meet with D. energy A. other B. transistor C. nature shows D. catch fire