题目内容：
Mary is 60 years old,_______she still plans to take part in the race.
A.though
B.Since
C.but
D.if
参考答案：
答案解析：
选择题：Mary is 60 years old,_______she still plans to take part in the race.
- 题目分类：成人高考
- 题目类型：选择题
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