. -May we leave the classroom now?
-No, you ______. You ______ to leave until the bell rings.
| A．mustn’t, are allowed | B．don’t have to, are supposed |
| C．needn’t, aren’t allowed | D．can’t, aren’t supposed |
---There’s too much salt in the Chinese diet.
---So there is. The WHO says only 1.5 grams of salt __________ for each man every day.
| A．is needed | B．needs | C．will need | D．has needed |
Trees ____ fight air pollution．They are natural air conditioners．
| A．should | B．must | C．need | D．can |
. -May we leave the classroom now?
-No, you ______. You ______ to leave until the bell rings.
| A．mustn’t, are allowed | B．don’t have to, are supposed |
| C．needn’t, aren’t allowed | D．can’t, aren’t supposed |
— The 2010 Asian Sports Meet this November in Guangzhou.
— Yes. I wish Chinese players will do well.
| A．will be held | B．have been held | C．was to be held | D．would be held |
— Wow! You look different! You wear glasses.
— Yes, I did. But now I am wearing contact lenses(隐形眼镜).
| A．could | B．must | C．used to | D．would |
The red bike _______be Hu’s. She has a blue bike.
| A．must | B．might | C．can | D．can’t |
---Mum, can I go to the zoo with Linda?
---When your homework _______, you can.
| A．is finished | B．was finished | C．finishes | D．finished |
---Must I do the work today?
---No, you _______. You may do it tomorrow.
| A．can’t | B．mustn’t | C．shouldn’t | D．needn’t |
–Look at that girl! Is it Susan?
--No, it _______ be her. She has gone back to her hometown.
| A．mustn’t | B．can’t | C．needn’t | D．wouldn’t |
You _______ see a dentist when you have a toothache.
| A．may | B．need | C．should | D．can |
When I heard my baby girl say her first word, my heart was with joy.
| A．filled | B．marked | C．prepared | D．shown |
In order to keep our students safe, strangers ________before entering the school yard.
A. will check B. will be checked C. checked
—Is Nancy knocking at the door?
—No, it ________ be Nancy. She has gone to Guangzhou.
A. can’t B. mustn’t C. won’t
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