— 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:C 后面的句子是和目前事实相反的虚拟语气,因此回答的第一个句子应该叙述目前的客观情况。 节肢动物的共同特征是:身体有很多______构成;体表有______;足和触角______.