问题补充：
—I have a birthday party this evening. Are you free?
—Yes, I am.
A. Are...busy
B. Do...have time
C. Are...great
D. Do...have homework
答案：
A. Are...busy
(答案→)B. Do...have time
C. Are...great
D. Do...have homework
解析：
试题分析: 句意：今天晚上我开生日聚会，你有时间吗？是的，我有。busy忙的，have time有时间，great很棒的，have homework有作业；free空闲的，与have time有时间意思相近，故选B
