I promised to get there before 5 o'clock, but now the traffic is so heavy．They ________ for me impatiently．

A．may wait

B．must be waiting

C．could wait

D．ought to wait

Tom, you ________ leave your clothes on the floor like that!

A．wouldn't

B．mustn't

C．needn't

D．may not

(经典回放)Children under 12 years of age in that country ________ be under adult superrision when in a public library．

A．must

B．may

C．can

D．need

Sir, you ________ be sitting in this waiting-room．It's for women and children only．

A．oughtn't to

B．can't

C．won't

D．needn't

I ________ her, but I never could．

A．ought to help

B．must help

C．must have helped

D．ought to have helped

Mr．Bush is on time for everything．How ________ he be late for the important meeting?

A．would

B．should

C．might

D．need

－When can you get my car repaired? I need it tomorrow．

－It ________ be ready by 8∶00．

A．must

B．need

C．should

D．might

(经典回放)－Excuse me, but I want to use your computer to type a report．

－You ________ have my computer if you don't take care of it．

A．shan't

B．mightn't

C．needn't

D．shouldn't

When we were young, every evening my brother and I ________ stay at home waiting for our mother．

A．could

B．might

C．would

D．should

________ you like to have a walk with us this evening?

A．Could

B．Will

C．Would

D．Can