科目: 来源: 题型:选择题
A. | mustn't | B. | may not | C. | can't | D. | wouldn't |
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科目: 来源: 题型:选择题
A. | helped | B. | was helping | ||
C. | had helped | D. | have been helping |
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科目: 来源: 题型:选择题
A. | had begun | B. | was beginning | C. | began | D. | begins |
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科目: 来源: 题型:阅读理解
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科目: 来源: 题型:选择题
A. | but | B. | because | C. | so |
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科目: 来源: 题型:填空题
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科目: 来源: 题型:填空题
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科目: 来源: 题型:句型转换
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科目: 来源: 题型:选择题
A. | and | B. | or | C. | but | D. | so |
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