1.________Jill was worried seemed obvious to everyone at the party last night.
A.what
B.that(正确)
2.______he said so surprised us all.
A.what
B.that(正确)
为什么都选that,我第一反应都是选what。。。
关键是要看填的那个词在句子里作什么成分第一句中 Jill was worried 已构成一个小句,这件事对大家来说很明显,that作形式主语。第二句中that也是作形式主语。这两句考查的都是名词性that-从句。可以上这个网址看一下http://baike.baidu.com/view/414544.htm