这翻译成中文是什么？

1.Rain which is sudden,short and heavy,usually in summer time.
2.A person who pays rent for the use of a room,a flat or an office.
3.An organization that collect money or things to help poor people.
4.A short business letter which is used inside a company to inform people.
5.Things which are bought to remember a place or a person.
6.The books which are put on your desk.
7.give all the documents to their representative next week.
8.This is the audiovisual classroom.

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