摘要： I when the UFO landed. A. am watching TV B. was watching TV C. have watched TV D. watched TV
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I ________ when the UFO landed.
A. am watching TV B. was watching TV C. have watched TV D. watched TV
查看习题详情和答案>>I ________ when the UFO landed.
A. am watching TV B. was watching TV
C. have watched TV D. watched TV
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