强化训练答案:
I.1.families 2.mine 3.swimming
4.meat 5.tall/long 6.studies
7.friendly 8.problem 9.them
10.boys’ 11.empty 12.teacher’s 13.course
14.traveling 15.locked 16.English
17.knives 18.our 19.closed
20.different
II.21—25 BAACA 26—30CBDDD 31—35 ACADB 36—40DABAC
III.41.gets 42.to have 43.Don’t be 44.to eat 45.carry /to carry 46.are playing 47.does, do 48.watching
49.is 50.does, take
IV. 51.Does, do 52.isn’t any/ is no 53.Are, working 54.How does
55.Don’t take 56.does, do 57.Who is
58.Would, or 59.What is 60.Why not