2. B. Does; belong to
6. B. are wanted; am coming
7. A. of which
8．A. be sent for 主句谓语是含 要求命令建议 意思的动词 时 宾语从句的谓语 用虚拟语气 即 should加动词原形 should 可以省略
10. A. that; whether
12. A. With 这是 with的复合结构 作状语
13. C. more than
14.B. Those who
15. A. that
16. B. are cut
17. B. above all
18. B. raise; rise
19. D./; bought