—Oh, you have a headache and a cough. __________ have you been like this?

      — Two days.

 A .How long      B. How often     C. How old     D. How many

When the traffic lights are red, we _______ stop.

A. should     B. might     C. must    D. may

He looks very pale. He may have _______ fever.

      A. an      B.a       C.the       D. /

I’m sorry to keep you _______ for almost two hours.

    A. wait     B. to wait    C. waiting     D. waited

You look _______ . Do you hear the _________ news?

 A. excite: excited         B. excited: excite    

C. excited: exciting       D. exciting: excited

—Must I take the medicine every day?

— No, you______.

    A. must not   B. may not   C. haven’t   D. needn't

My mother often tells me _______ my classmates when they need.

    A. help B. to help  C. helping    D. helps

You’d better ________ too much meat. You are too fat.

    A .eat     B. not eat   C. not to eat     D. don’t eat

Staying up late is _______ your health.

    A. bad for   B. good to    C. bad to    D. good for

It’s important ______ us ________ some good books.

    A. for, read    B. to, to read    C. to, reading     D. for, to read