课堂训练第二题答案
7 | 8 | 9 | 10 | 11 |
C | C | A | B | B |
课后提升第Ⅰ题答案
1 | 2 | 3 | 4 | 5 |
together | Junk | online | died | health |
课后提升第Ⅱ题答案
6 | 7 | 8 | 9 | 10 |
D | C | A | D | C |
课后提升第Ⅲ题答案
11、 is good for
12、 Fifty percent of
13、 spend time with
14、 never drinks
15、 Although;often gives; to
课后提升第Ⅳ题答案
16、 healthy
17、 cleaning
18、 exercising
19、 surprised
20、 to learn