单选题 When a patient's blood pressure is (much) higher (than it) (should be), a doctor usually insists that he (will not) smoke.
【正确答案】 D
【答案解析】将will not改为should not或not。insist意为“坚决主张,坚决要求”时,其后的从句要用虚拟语气,即其后从句中的动词要用should do的形式,should可以省略。