科目: 来源: 题型:选择题
| A. | be used as | B. | be used for | C. | be used to | D. | be used by |
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科目: 来源: 题型:填空题
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科目: 来源: 题型:选择题
| A. | cleans | B. | is cleaned | C. | was cleaned | D. | cleaned |
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科目: 来源: 题型:选择题
| A. | has done | B. | must be done | C. | is doing | D. | was done |
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| A. | booked | B. | have booked | ||
| C. | were booked | D. | have been booked |
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科目: 来源: 题型:选择题
| A. | do; hold | B. | did; hold | C. | was; be held | D. | will; be held |
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