用括号内单词的适当形式填空。（共5小题，每小题1分，共5分）
Tom is a good boy and he is           (friend) to others.
She made a           (decide) to study English hard from then on.
A conversation with his parents            (influence) him a lot.
To           (everyone) surprise, he cried.
How long do you need           (finish) drawing this picture?