suddenly he fell( )a stone,but he struggled( )his feet

问题描述:

suddenly he fell( )a stone,but he struggled( )his feet
A.over; on B.over; to C.above ; with D.on ; from

答案是B:
suddenly he fell(over)stone,but he struggled(to)his feet.
意思是:
突然,他被石头绊倒了,但他竭力挣扎他的双脚.