1-5ACCBA 6-10BACBC 11-15ACBAB
16-20CAACB 21.Growing 22.who
23.unless 24.importance 25.and
26.todo27.by 28.healthy
29.cheapest 30.hassaved
31....Ihaveworn... have→had
32....senditto... it→them
33....thoughInoticed... though→when
34....walkslowly. walk→walking或walked
35....butIran... but→so/and
36....wenttodownstairs... 去掉to
37....caughtuphim. up后加with
38....thesweetsmile... the→a
39....wassomoving... moving→moved
40....intear. tear→tears
