问题
选择题
They met, ______ a few greetings and then settled down to their own business. [ ]
A. changed
B. spoke
C. exchanged
D. traded
答案
答案：C
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They met, ______ a few greetings and then settled down to their own business. [ ]
A. changed
B. spoke
C. exchanged
D. traded
答案：C