25. ______practice makes perfect is true.
_____ I failed in the examination again drove my mother mad.
26. –Look! How terrible his situation is! Could you help him? --I’d like to help, but ____ I can’t.
I don’t know if he ____, but if he ____ I will let you know.
One of the men gave his opinion ____ what the book said was right.
--It’s raining heavily, isn’t it? --Yes, ______ yesterday.