The young girl sitting next to me on the plane was very nervous. She_____before.
The young girl sitting next to me on the plane was very nervous. She_____before.
A. hasn't flown
B. didn't fly
C. hadn't flown
D. wasn't flying
答案:C
解析:before意為“在……之前”,常與完成時連用。上句的時態(tài)是一般過去時,所以要用過去完成時,表示動作發(fā)生在was very nervous之前,因為她以前沒有乘坐過飛機(jī),所以感到緊張。