It was not until dark ______ he found ______ hethought was the correct way to solve the problem

Why didn’t you try your best to get on the bus?一I tried to，but I could，it started moving

Faced with difficulties, you should believe your confidence is _______ makes a difference.

Jack is a great talker.It’s high time that he____something instead of just talking.

That was the last time I saw my father before he _____.