Fruit juices can be harmful ___ children’s teeth

Remember to ________ a good state of mind even if you shouldfail plenty of times．

Mum，I’ll take exams after National Day holiday. I’m a little bit stressed.— Believe in ______. I think you’re very excellent in your class.

What do you think of your step—mother? ——There are some things that are not easy to______，but on the whole she is a good mother．

I am too busy now. If I____ free,I ____to the cinema with you.