AlotofevidentsignssuggestedtheFlightQZ8501ofAirAsia

问题详情：

 A lot of evident signs suggested the Flight QZ8501of Air Asia ___down into the ocean.

  A. crash                     B. had crashed                    C. should crash            D. crashing

【回答】

B

知识点：过去完成时及其被动式

题型：选择题