—Did you see Tom at the party ?

—No, he _____ by the time I got there .       [ ]

A. left    

B. was leaving     

C. had left    

D. has left

高血压伴消化性溃疡患者不宜选用的药物是（）

A.普萘洛尔

B.利血平

C.哌唑嗪

D.卡托普利

E.氯沙坦