—Where is Tom? — Well he you hereOtherwise he would come down right now．A. didn’t know

问题补充：

—Where is Tom?

— Well, he you here．Otherwise he would come down right now．

A. didn’t know; were

B. hasn’t known; are

C. doesn’t know; are

D. hadn’t known; were

答案：

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。