问题补充：
-- Bob, please go and buy some vegetables for me. I’m busy now.
-- Can you be more ， mum?
-- Some tomatoes and a cabbage.
A. specific
B. firm
C. abstract
D. complete
答案：
(答案→)A. specific
B. firm
C. abstract
D. complete
解析：考查形容词：A. specific明确的B. firm坚定的C. abstract抽象的D. complete完全的，句意：--Bob，请去给我买些蔬菜，我很忙。--能更明确些吗？--一些西红柿和大白菜。选A。
