问题补充：
The doctor insisted that the patient seriously ill and that an operation in no time.
A. was; be carried out
B. should be; be carried out
C. was; was carried out
D. should be; was carried out
答案：
(答案→)A. was; be carried out
B. should be; be carried out
C. was; was carried out
D. should be; was carried out
解析：考查固定搭配。Insist当坚持说，坚持认为讲时，后面宾从该用什么时态用什么时态；当坚决要求讲时，后面宾从要用（should）+do的虚拟语气。句子中insist后面跟了用and连接的两个宾语从句，连接第一个从句时insist是坚持认为的意思，不用虚拟语气，排除B,D；连接的二个从句时，insist是坚决要求的意思，要跟虚拟语气，所以选A。
