I am sure he didn’t know that his mother was seriously ill.
He couldn’t possibly have known that his mother was seriously ill.
The animals appeared ……………………………. when the flames surrounded them. (control)
Dick could not pass the examination because the questions were too difficult.
We decided that we wouldn’t go with him to the airport after all. (see)
It was such an interesting film that no one wanted to leave the cinema.
All members of our team played ……………………………., so we lost the game. (success)