—_______ does it take to walk from your home to your school?— Fifteen minutes.
It’s very strange that _____ money we make, the poorer we feel we are.
----______ you ever ________ Tom before ?---- No, I _____ him just two minutes ago.
The rich man gave away 5 _____ his money to charity to help the poor children in Africa.
I can________ be a nurse.I’m not a very patient person at all.
Everyone knows that _____ sun is in the center of the solar system(太阳系)