A. environmental B. heady C. sea D. blackboard A. migrate B. lake C. recovery D. disobey A. greeting B. resent C. mountain D. be weak in A. nebula B. bamboo C. hopeless D. What would you like A. longan B. brave C. have a fever D. fire A. return B. river C. carve D. for the first time A. avenue B. skyscraper C. cloud D. ballast A. spatial B. world C. Chinese book D. mouthful A. rectangle B. influential C. flower D. image A. sun B. shop assistant C. she D. rob