The time he has devoted in the past 10 years______ the disabled is now considered__________ of great value．
| A．to helping; being | B．to helping; to be |
| C．to help; to be | D．helping; being |
—Will you read me a story，Mummy?
—OK.You ________ have one if you go to bed as soon as possible.(2011·陕西)
| A．might | B．must | C．could | D．shall |
One of our rules is that every student ________ wear school uniform while at school.(2012·辽宁)
| A．might | B．could | C．shall | D．will |
The new law states that people ________ drive after drinking alcohol.(2012·上海)
| A．wouldn't | B．needn't | C．won't | D．mustn't |
—What do you think we can do for our aged parents?
—You________do anything except to be with them and be yourself.
| A．don't have to | B．oughtn't to |
| C．mustn't | D．can't |
Parents________send their children to school when they reach six years old.
| A．could | B．were able to |
| C．ought to | D．would |