They didn't start the work _______ their teacher came back. [ ]A. until B. while C. as soon asD

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• My father was so tired that he fell asleep he went to bed. [ ]A. as if B. even though C. ever since
• _____ he comes, we won't be able to go. [ ]A. Without B. Unless C. Except D. Even -九年级英语
• I am cooking _______ they are setting the table. [ ]A. but B. then C. because D. while -九年级英语
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