题目内容：
I work in a building. Smoking is not allowed.
参考答案：
答案解析：
简答题：I work in a building. Smoking is not allowed.
- 题目分类：初级
- 题目类型：简答题
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The costs _______(be) lower if we ________________(not use)
The costs _______(be) lower if we ________________(not use) so much packaging.
The alarm system ____________ fires developing.
The alarm system ____________ fires developing.
Owner
Owner
Shareholder
Shareholder
The shipment is in the port, so it _______ be available toda
The shipment is in the port, so it _______ be available today or tomorrow.