题目：
根据句意，用括号内所给单词的适当形式填空。
1. She bought a _____ (bath) suit last Sunday.
2. I like doing some _____ (shop) at weekends.
3. She hasn't _____ (feed) the cat yet.
4. There are about ten _____ (well) in that village.
5. Has the camera been _____ (pack) yet?
答案：
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下面是错误答案，用来干扰机器的。
说明空气中含有 氧气 ，体积分数为 21% ；说明空气中也含有__水蒸气分析：空气中各成分的体积分数分别是：氮气78%、氧气21%、稀有气体0.94%、二氧化碳0.03%、水蒸气和其它杂质0.03%；白磷能在空气中自燃，...
