SAT 语法If not for bees,which are responsible for pollinaing t

这是一个虚拟条件句,完整而正确的句子：If it were not for bees,which are responsible for pollinaing the vast majority of Earth's flower,many plants would be unable to produce fruits or seeds.
说明：条件状语从句中省去了主语 it 和谓语动词 were,由于表示与现在事实相反的虚拟假设,故主句谓语应为：would +动词原形,即：would be

既然前面是if说明是虚拟语气，那后面就应该是will be unable了吧

主句是现在时，表现为 which are
那么错误的地方应该是 are unable
时态错误