The room must _____ up right now. It’s too dirty.
| A．be cleaned | B．be cleaning |
| C．clean | D．cleaned |
—Tom! I looked for you everywhere at the party last night.
—Oh, I to the party.
| A．am invited | B．was invited |
| C．am not invited | D．wasn’t invited |
--- Look! The plane is sending up signal “SOS”. It ________ be in danger.
| A．will | B．should | C．must | D．can |
Three bridges ________ over the river five years ago.
| A．built | B．build |
| C．were built | D．are built |
Our rooms __________ by my mother three times a week.
| A．cleans | B．are cleaning |
| C．is cleaned | D．are cleaned |
Computers are very useful in our lives, but they must properly.
A. use B. be using C. be used
— Look! The tree is growing well. When ?
— Sorry, I don’t know, either.
| A．was it planted | B．has it been planted |
| C．is it planted | D．will it be planted |
—You see, China is becoming stronger and stronger now.
—Yes. That’s why Chinese _____ in more and more schools out of our country.
| A．are taught | B．has taught |
| C．is taught | D．have taught |
We _______ pay to get into the concert. It's free.
| A．can't | B．mustn't | C．might not | D．don't have to |
— Jack, can you play the guitar?
— Yes, I _______．
| A．must | B．can | C．need | D．may |
－Shall we go there by taxi? －No, we ______. It’s not far from here.
| A．needn’t | B．can’t | C．couldn’t | D．mustn’t |
—Must I wash these plates?
—No, you . The machine can do it.
| A．mustn't | B．can't | C．may not | D．needn't |
---There’s too much salt in the Chinese diet.
---So there is. The WTO says only 1.5 grams of salt_______ for each man every day.
| A．is needed | B．Needs |
| C．will need | D．has needed |
This book _______ be Li Lei’s. Look! Her name is on the cover.
| A．must | B．may | C．can | D．need |
Father was very angry because his favorite glass ________ by his pet dog.
| A．broke | B．has broken |
| C．was broken | D．has been broken |
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