帮我看一下这篇英语作文,有没有语法错误

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帮我看一下这篇英语作文,有没有语法错误
Thisyear's volunteer activites is different of in former year,very full of meaning.
We went to visited a countryside school ,that is a quite beautiful but a poor place.We talked to with there children and played gams.We also brought some old computers to them and told them computer's history,taught them how to used a computer.
Last,we were very happy to said good-bye!
O(∩_∩)O谢谢啦

of 改成 fromformer前面的in去掉talked 后面的 with 或者 to 去掉一个 last改成 lastly happy to said改为 happy to say