1.He suggested that a meeting (hold) to discuss the issue.
答案:(should) be held
2.I would rather they (not hear) of the news.
答案:hadn’t heard
3.She speaks American English so fluently as if she (study) English in America.
答案:had studied
4.It is necessary that he (send) there immediately.
答案:(should) be sent
5.It’s high time that we (start) to study hard.
答案:started
6.If there had been enough UN peace-keepers,they (be able to) stop the war.
答案:could have been able to
