题目内容：
A．planting some trees in the greenhouseB．writing a want ad to a local newspaper
C．putting up a going out of business sign
D．helping a customer select some purchases
参考答案：
答案解析：
填空题：A．planting some trees in the greenhouseB．writing a want ad t
- 题目分类：英语四级
- 题目类型：填空题
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B．writing a want ad to a local newspaper
C．putting up a going out of business sign
D．helping a customer select some purchases