Charlie ______ be really difficult at times even though he’s a nice person in general.

A．shall

B．should

C．can

D．must

．Just be patient. You ________expect the world to change so soon.

A．can’t

B．needn’t

C．may not

D．will not

I’m impressed with his determination. When he had a problem to solve, he  _____ work at it until he found an answer.

A．would

B．might

C．must

D．should

She ________ when she received her medical report.

A．could help but to cry	B．couldn’t help but crying
C．couldn’t help crying	D．couldn’t help to cry

–I’ve taken someone else’s green sweater by mistake.
–It       Harry’s. He always wears green.

A．could be

B．will be

C．mustn’t be

D．has to be

Haven’t I told you already that you ___ have my answer tomorrow morning?

A．will

B．shall

C．should

D．would

---Guess what! I have got the highest score in the final exam.
---- Great! You ______ worked very hard and put a lot of energy into it.

A．must

B．must have

C．should

D．should have

—I plan to pay a visit to Peter this Sunday．
—I agree. You know, he ________come to see us on Sundays when we were in USA.
A. might          B. would         C. should      D. could

Keep your slides simple. If they have too much text, people ____ well feel bored.

A．may

B．must

C．need

D．can

If you _____ smoke, please go outside because this is a non-smoking office.

A．must

B．should

C．can

D．may