You _____ __ wash your hands before meals. It is good for your health. A. must B. can C. have to
— Do you enjoy in this city? — Yes, I do.
— Why don’t you like winter in Beijing? — Because it is winter in Guangzhou.
Tom is tall, but his sisters, Mary and Kathy, short.
I have to do today.
If you want to keep healthier, you must eat ____ vegetables and _____meat.