my last summer vacation怎么写?

I had a happy and wonderful summer vacation last year。 I did my homework every day so that I could finish doing it as quickly as I could。 I played table tennis with my friends every afternoon and we really had a good time。 I helped my parents do some housework every day because they were busy。 I sometimes went shopping and went to the movies with my friends。 I visited my grandparent and stayed with them for a week。 There I helped them clean the house and went to climb the mountains。 My parents and I went to Hainan Island for a week。 We walked around the beach and went scuba-driving。 I also learn how to do roller-skate and I took an English course。 So my last summer vacation was very interesting。