阿摩線上測驗
28. An accident involving over ten vehicles _____ on the highway.
(A) was occurred
(B) has occurred
(C) has been occurred
(D) has occurring
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統計： A(151), B(176), C(118), D(31), E(0) #3077075
統計： A(151), B(176), C(118), D(31), E(0) #3077075
