--When _____ the abacus _____? -- In the sixth century by the Chinese people.
| A．is, invented | B．did, invent | C．was, invented | D．does, invent |
-- Look at the boy running on the ground. Is it David?
-- It _______ be him. I saw him go to the teacher’s office just now.
| A．might | B．could | C．can’t | D．mustn’t |
I can play basketball，but my sister ________．
| A．hasn’t | B．can’t | C．doesn’t | D．isn’t |
You didn’t have breakfast. You ________ be hungry now.
| A．must | B．can’t | C．could | D．might |
It _________ rain this afternoon, but I am not sure.
| A．will | B．can | C．must | D．may |
While he the bus, he a book.
| A．was waiting for, read | B．waited for, was reading |
| C．was waiting for, was reading | D．waited for, read |
Our English teacher said she _______ speak three languages．
| A．could | B．can | C．will | D．is going to |
Mr. Smith, together with his sons, _____ supper at 7 o’clock yesterday evening．
| A．was eating | B．were eating | C．was eat | D．were eat |
—Peter doesn’t mind lending you his camera.
—He __________. I’ve already borrowed one.
| A．needn’t | B．can’t | C．mustn’t | D．shouldn’t |
I _______ keep dogs for protection, but now I keep them as pets.
| A．would rather | B．had better | C．used to | D．have to |
－They said sorry to me, but I wouldn’t listen.
－It is foolish of you _______ others for the mistakes.
| A．forgive | B．not forgive | C．to forgive | D．not to forgive |
--- May I use your dictionary, please?
--- Sorry. My dictionary . I’ve looked for it everywhere but I ______ it yet.
| A．has lost; don’t find | B．is missing; haven’t found |
| C．has lost; haven’t found | D．is missing; don’t find |
--- Must I finish the project now?
--- No, you _ . You _ do it this evening.
| A．mustn’t; can | B．needn’t; may |
| C．can’t; must | D．needn’t; must |
—Don’t play with the knife, ______ you’ll cut your hand. —Sorry, I ______ .
| A．so; can’t | B．and; won’t | C．but; mustn’t | D．or; won’t |
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