It is _______ him to save the old man out of the big fire.

Was the suspect pronounced guilty—Yes，the new evidence ________ the first witness’ story.

Life is like an onion，sometimes makes you weepwhen you try to open it．

Which of these two English books will you borrow —I’llborrow ______ of them. Because they are very interesting.

important thing in life is to have a great aim,and ______ determination to attain it.