题目内容：
12(5.0分)
5.0
Mary is always ready to help others when they are in trouble and she never ____ their requests.
A)
turns up
B)
turns over
C)
turns in
D)
turns down
参考答案：
选择题：12(5.0分) 5.0Mary is always ready to help others wh
- 题目分类：华北水利水电大学-工商管理-大学英语（3）
- 题目类型：选择题
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12(5.0分)
5.0
Mary is always ready to help others when they are in trouble and she never ____ their requests.
A)
turns up
B)
turns over
C)
turns in
D)
turns down