I insist that a doctor_____ immediately.
A.has been sent for B. sends for C. will be sent for D. be sent for
【选择】D. be sent for
【解析】
如果名词性从句(包括宾语从句、主语从句、表语从句和同位语从句)表示意见、建议、命令、决心、权利等个人态度,从句的谓语需要用虚拟语气“should + 动词原形”或者省略 should 直接用动词原形。这类从句往往出现在主句谓语动词是suggest, advise, propose, order, demand, command, insist,claim 等或主句中含有上述动词的同源名词 suggestion, advice, proposal, order, demand, command, insistence,claim 等。
另如:
He suggested that we (should) go out for a walk. 他建议我们出去走走。【宾语从句】
His advice is that you (should) not violate other’s privacy. 他的建议是你不该闯入私室。【宾语从句】
It is the government's proposals that this act (should) be abolished. 政府的提案是废除该项法案。【主语从句】
Her parents were united in their insistence that she (should) go to college. 她的父母亲一致坚持认为她应该上大学。【同位语从句】