根据句子中所给的单词首字母或中文提示，填写正确的单词。
We see with our eyes and we walk with our f ________.  
My sister is a n________. She works in a hospital.
The old man is d      , so he can’t hear anything.
Mr. Smith wrote a l         to his son last night.
Don’t do that. It’s a w__________ of time.
We should know about the ______________(重要性) of learning English.
We can’t             (想象)what the life will be like in 100 years.
They were playing soccer ____________ (与……同时) I was doing my homework at home.
I think it’s ____________(不公平的）for parents to do all the housework.
Jenny cut ___________(她自己) yesterday.