the doctor suggested that he ——an operation at once.
问题描述：
the doctor suggested that he ——an operation at once.
must have
had
have
had had
给出正确选项和理由及翻译
答
have
suggest做建议讲时 后面接that引导的宾语从句要用虚拟语气Should加上动词原形,should可以省略
完整的是：
the doctor suggested that he should have an operation at once.
与suggest相同的还有insist order demand 等,表命令 建议 要求 坚持