请根据所提供的情景，用can或could写出表示请求许可的句子。

You missed the last English lesson．You want to look at your friends'notes．

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请根据所提供的情景，用may或might写出表示请求许可的句子。

You are in the library at lunchtime．You ask the librarian if you are allowed to eat your lunch in the library．

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请根据所提供的情景，用can或could写出表示请求许可的句子。

Your uncle and aunt have invited you to join them for a walk in a park nearby．You want to bring your dog along．

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请根据所提供的情景，用can或could写出表示请求许可的句子。

You want to ask your teacher for permission to leave school early today．

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请根据所提供的情景，用can或could写出表示请求许可的句子。

Your friends are going to the cinema tonight．You want to go too．

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