题目内容：
根据以下材料，回答题：
he thinks, having a crowd around often makes things better.
In Britain, there are 4.3 million closed-circuit television cameras, which are used to__________
参考答案：
答案解析：
填空题：根据以下材料，回答题：he thinks, having a crowd around often makes thin
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- 题目类型：填空题
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he thinks, having a crowd around often makes things better.
In Britain, there are 4.3 million closed-circuit television cameras, which are used to__________