1.The classmate will take part in my music .
2.I and my parents went to the zoo yesterday.
3.thiếu từ by(nếu có từ by thì câu là:
My children went to the zoo by bus.
4.He saw a lot of animal at the zoo.
5.I and my family will swim in the sea.
6.Theu'll be at the seaside on sunday.