选出不同类的单词
1. A. firstB. fourC. second
2. A. libraryB. gym C. water
3. A. wayB. lunch C. dinner
4. A. artB. nowC. music
5. A. thirty B. forty C. over
6. A. LondonB. Moscow C. class
7. A. rainyB. kidC. snowy
8. A. book B. hotC. cold
9. A. window B. wallC. ball
10. A. heB. what C. she