Tom’s a taxi driver, ＿＿＿＿＿ he really wants to be a singer.

We must do something to protect the earth, ____we will lose our home.

My sister ______ go to bed _______ my mother came back last night.

 My friend has the same haircut _______I do.

—　　　do you have an Art Festival in your school? —Once a year.