根据句意及首字母提示，在空白处填入适当的单词。
The weather becomes so cold that the water in the rivers has f_______.
The young man was not good at his job at all, so the boss d______ him yesterday.
You can believe him because he is an h_______ man.
Miss Wang have a sweet v_______. Her students like her class very much.
—I left my mobile phone on the desk at home. Could you f______ it for  me?
—Yes, mom. I’ll be back very soon.