题目内容
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On average, there are 800 tornadoes in the U.S. each year, _______ about 80 deaths and 1,500 injuries.
A. cause B. caused C. to cause D. causing
D
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题目内容
.
On average, there are 800 tornadoes in the U.S. each year, _______ about 80 deaths and 1,500 injuries.
A. cause B. caused C. to cause D. causing
D