下列画线字的注音，完全正确的一项是（ ）

Learning from _______ mistakes can help us stay cautious and make wise decisions in the days to come.

“Was his father very strict with him when he was at school?” “Yes. He had never praised him _______ he became one of the top students in his grade.”

I ________ a novel written by Ernest Hemingway last night, and another night I’ll finish it

What a speech he has delivered!—– Really good! I could hardly imagine myself to make a speech in public.