You didn't let me drive. If we ______ in turn, you ______ so tired. [ ]

A. drove; didn't get

B. drove; wouldn't get

C. were driving; wouldn't get

D. had driven; wouldn't have got

为比较X、Y、Z、W四种金属的活动性，某同学利用这四种金属单质、盐酸、Y的硝酸盐、W的硝酸盐进行有关实验，结果见下表（能发生置换反应的记为“√”，不能反应的记为“一”，无标记的表示未做该实验）．这四种金属的活动性顺序为（　　）

A．X＞Y＞Z＞W

B．W＞Z＞Y＞X

C．Z＞W＞Y＞X

D．Z＞Y＞W＞X