单项选择题

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单项选择题
A. To restore the normal production of the oil wells. B. To estimate the losses caused by the fires. C. To remove the oil left in the desert. D. To use the oil left in the oil lakes.
A. To restore the normal production of the oil wells.
B. To estimate the losses caused by the fires.
C. To remove the oil left in the desert.
D. To use the oil left in the oil lakes.
单项选择题
A. It was getting dark. B. He was afraid of being blamed by his friend. C. The birds might have flown away. D. His friend would arrive any time.
A. It was getting dark.
B. He was afraid of being blamed by his friend.
C. The birds might have flown away.
D. His friend would arrive any time.
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