用所给动词的正确形式完成短文Dear friend,My name is Bob,I am 11 years old.I

用所给动词的正确形式完成短文
Dear friend,My name is Bob,I am 11 years old.I study in a primary school（小学）in America.My school is big.There are 30 student in my class.It's fine today.My classmates（同班同学）and I (play)on the beach（海滩）.It's a very beautiful place.The water is clean and blue.Many birds (fly)over the sea.A dog (run)after the children.Many people (swim).Some boys (play)football.A girl (sit) on a chair and (draw) picture.And I （sit) on a chair and (write) to you!What are you (do)now?Please write to me soon.Yours,Bob