—Where is Tom ?—Well he you here. Otherwise he would come down right now.A. didn’t kno

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：本句的语义环境为：第一个人现在想见Tom，而Tom未来，是因为Tom现在还不知道第一个人在那儿。故选C。