用括号内所给动词的适当形式填空。
1. Look! The children _________ (play) football on the playground.
They _________ (play) football every Sunday afternoon.
2. Please be quiet! We _________ (listen) to the song You and Me.
3. — Mrs. Green likes children very much, doesn't she?
— Yes, that's true. She __________ (write) a children's book these days.
4. How many lessons __________ Peter __________ (have) on Monday?
5. It's fine today. The sun __________ (shine).