Thomas Alva Edison didn’t “invent” the light bulb, but rather he ______ a 50 –year –old idea, which is not well –known.
| A．improved upon | B．take down | C．put up | D．break away |
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Your essay is too long. You’d better _______ to about 1000 words.
| A．cut it off | B．cut it up | C．cut it down | D．cut it into |
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The man founded a charity(慈善事业)_____________ his late wife.
| A．in memory of | B．to remember | C．for the memory of | D．to the memory of |
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I was really anxious about you. You ______home without a word.
| A．mustn’t leave | B．shouldn’t have left | C．couldn’t have left | D．needn’t leave |
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She ________the film. She knows nothing about it.
| A．can’t see | B．can’t have seen | C．must see | D．mustn’t have seen |
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If you _______wait a moment, I’ll go and find our manager.
| A．have to | B．should | C．will | D．must |