43. A.lists B.facts C.habits D.laws 44. A.method B.place C.lesson D.reason 45. A.remain B.show C.doubt D.trust 46. A.kept B.treated C.answered D.warned 47. A.covered B.wondered C.touched D.stood 48. A.Why B.Whether C.When D.Where 49. A.town B.nature C.city D.count...