我确信他昨天生病了 I ——— ———that he was ill yesterday

I am sure that he was ill yesterday
I am sure
我可以肯定；[口]的确
be ill
生病了
例句
I am sure he wanted to die in harness .
我确信他是希望死在他的岗位上的.
请在线交谈 祝你考上理想的学校