—Where is Tom?
— Well, he you here．Otherwise he would e down right now．
A. didn’t know; were
B. hasn’t known; are
C. doesn’t know; are
D. hadn’t known; were
网友回答
A. didn’t know; were
B. hasn’t known; are
(答案→)C. doesn’t know; are
D. hadn’t known; were
解析：考查时态。根据otherwise否则引导与现在事实相反的虚拟语气，故可判断为一般现在时，故选C。