The researchers have just completed a study of driving situations.

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问题 The researchers have just completed a study of driving situations.

选项 A、started
B、finished
C、changed
D、made

答案B

解析 句意为:研究人员刚刚完成车况测试的研究。complete“完成”,四个选项:start“开始”;finish“完成”;change“改变”;make“使得”。
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