请英语高手帮我诊断诊断以下句子是否有误,

请英语高手帮我诊断诊断以下句子是否有误,
这些句子是我造的,若有误请帮我纠正纠正.
1.Chinese chess teaches me a truth that pride does lead to most failures.
2.Achievements are reached by hard work rather than recreation.Actions are done after thorough consideration rather than casual decision!
3.I don't know how long I can act as such a funny tutor.
4.Indeed ,I found little friends are very lovely.
5.What are you going to do during the May Day holiday?
6.I stayed at home.I can't find somewhere to go.And you?How about your holiday?
8.Mom,you as well as dad are my best friends in my life,who will walk furthest together with me.Happy Mother's Day to you!
9.Little friends,you need to study hard and make progress every day.What's one and one?
11.Yes,there never was a feast but the guests have to depart--- all good things must come to an end
15.We're also supposed to learn to believe their ability.
19.Yes,I can’t think of any need in childhood as strong as the need for a father's protection…