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大全213 sipped/were sipping (885 sec18 1)
213. Clark and Florence , a husband-and-wife medical team, worked steadily and efficiently through the night, but sipping their coffee the next morning, she noticed that he seemed disoriented. (A) sipping their coffee the next morning, she noticed that he seemed disoriented (B) sipping their coffee the next morning, he seemed to be disoriented, she noticed (C) as they sipped their coffee the next morning, she noticed that he seemed disoriented (D) as they were sipping their coffee the next morning, he seemed, she noticed, disoriented (E) he seemed disoriented, she noticed, sipping their coffee the next morning
答案C。但我老对D有疑问,为什么不能用过去进行时?高手给解答一下? |
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