At the meeting the chairman requested that all the members______ _英语解答

At the meeting the chairman requested that all the members______ this problem carefully.
1.had studied
2.study
3.would study
4.studied

人气：212 ℃　时间：2020-03-24 13:59:01

解答

2.request that.(should)do sth.固定用法,答案省略了should ,后面应用动词原型