Many accidents by careless drivers last year.A. are causedB. were causedC. have causedD. w

发布时间：2020-08-23 04:00:43

Many accidents     by careless drivers last year. 
A. are caused
B. were caused
C. have caused
D. will cause

网友回答

A. are caused
(答案→)B. were caused
C. have caused
D. will cause
解析：句意：去年，许多交通事故都是由于司机的大意引起的。交通事故被引起用被动形式be caused，句中有last year明确的时间状语，故选B
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