A
表示建议、要求、命令等的动词suggest、advise、propose、demand、require、insist request、command、order等后的宾语从句中,谓语动词用should + 动词原形或是动词原形.如：
She suggested we (should)leave here at once.
The doctor ordered she should be operated.
虚拟语气在同位语从句和表语从句中的运用.
作表示建议、要求、命令等的名词advise、idea、order、demand、plan、proposal、suggestion、request等的表语从句和同位语从句,从句中的谓语动词用“（should）+ 动词原形”.如：
His suggestion that we (should)go to Shanghai is wonderful.
My idea is that they (should)pay 100 dollars.
再问： 那AC的区别是什么呢？
再答： Sorry! 我搞错了！主观原因，以为是语法问题。 选C investigate 调查;审查 If someone, especially an official, investigates an event, situation, or claim, they try to find out what happened or what is the truth. The two officers were being investigated by the director of public prosecutions... 两名警官正在接受检察官的审查。 Police are still investigating how the accident happened. 警方仍然在调查事故的起因。 survey 总体研究;审视;全面观察 If you survey something, you look at or consider the whole of it carefully. He pushed himself to his feet and surveyed the room... 他站起来仔细打量整间屋子。 He surveys American politics with a conservative world view. 他用一种保守的世界观审视美国政治。
