题目内容
| The farmers ________ on the farm when a UFO flew over their heads. |
A. worked B. work C. fire working D. were working |
试题答案
D
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The farmers ________ on the farm when a UFO flew over their heads.
[ ]
A. worked
B. work
C. are working
D. were working
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B. work
C. are working
D. were working