To our surprise, the 60-year-old granny driver eventually and drives well.A. becameB. has

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A. became
B. has bee
C. turned
(答案→)D. has turned
解析：本题考查动词辨析和时态。bee作系动词，表示“变成”，其后的单数可数名词前要加a或an.而turn表示“变成”，其后的单数可数名词前不加a或an.再结合后面的drives well可只要用与现在有关的时态。