10 years ago， _________ only one classroom building in our school. And in 10 years， _________ five classroom buildings in our school.

The old lady ______ the girl ten Yuan for washing windows, most of ______ hadn’t been cleaned for a long time.

Don’t worry. I’ll give this book to Jack as soon as heback.

Not only my friends but also I interested in football and Messi is our favorite star.

Who’s your best friend Is ____ a boy or a girl—A boy. I often play with _____ after school.