If you have the flu, you may ______.
have a headache
have a cough
have sore eyes
What should we do if we have the flu?
Have a lot of water.
See a doctor.
Stay in bed and have a good rest.
Can you go to crowded places to prevent the flu?
Must we play sports too much?
No, you mustn't.
Yes, you must.
No, you needn't.