科目: 来源: 题型:选择题
| A. | couldn't | B. | mustn't | C. | shouldn't | D. | needn't |
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| A. | can | B. | must | C. | may | D. | should |
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| A. | it | B. | their | C. | they | D. | them |
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| A. | Must | B. | Can | C. | Need | D. | May |
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| A. | need | B. | may | C. | must | D. | can |
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| A. | May | B. | Need | C. | Can | D. | Must |
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| A. | may | B. | can | C. | must | D. | could |
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| A. | Him | B. | He | C. | His | D. | She |
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