25. Eating a b______ diet helps you keep healthy.

24. Can you give me some a______　 on how to study English well？

23. Can you work out the math p______ ？

22. What's the m______　 with you， madam？

21. If you have bad bread， you may have a s______.

20. My teacher is very a______　 with me because I'm late again.

19. If you are too t______ ， please lie down and rest.

18. The patient(病人)is so w______　 that he can't stand up.

17. I don't b______　 the story， it's not true(真实的)。

16. It's i______ us to eat b______ diet.