问题
选择题
—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
答案：C
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。