癫病的治疗原则是：

A．心、脾、肾
B．肝、肺、肾
C．肺、肝、脾
D．肺、脾、肾
E．肝、脾、肾

—I hear Mr. Zhang has gone to Beijing for a meeting.

—Really? Do you know when he ______?[ ]

A. leaves

B. was leaving

C. has left

D. left