科目: 来源: 题型:选择题
| A. | is developed | B. | was developed | C. | developed |
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| A. | is called | B. | calls | C. | are called |
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| A. | painted | B. | is painted | C. | was painted |
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| A. | protect | B. | be protected | C. | prevent | D. | be prevented |
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| A. | will be invited | B. | have invited | C. | am inviting | D. | am invited |
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| A. | were taken | B. | are taken | C. | took | D. | I was taken |
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科目: 来源: 题型:选择题
| A. | didn't clean | B. | isn't cleaned | C. | was cleaned | D. | wasn't cleaned |
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