题目内容：
His backache is only _________ for not watering the flowers.
A. a reason
B. a cause
C. an excuse
D. reasons
参考答案：【答案仅供学习，请勿对照自行用药等】
答案解析：
选择题：His backache is only _________ for not watering the flowers.
- 题目分类：习题答案
- 题目类型：选择题
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