Only when you showed the pass to the guard to e out our school．
A. you allowed
B. allowed you
C. you were allowed
D. were you allowed
网友回答
A. you allowed
B. allowed you
C. you were allowed
(答案→)D. were you allowed
解析：Only+状语开头句子采用倒装。“只有你向警卫展示了通行证才能允许你进入我们学校”。 选D