–I could not start my car this morning due to the cold weather. --No wonder you were late. You ___ have used mine. I was not using all the morning.
— Shall we go to see the snow sculptures(雕塑)? — _______.
Do ________ you think is right _________ difficulties you may have.
— I phoned you at about three this afternoon, but no one answered. — Oh, that was probably _______ I was doing exercise outdoors.
Everyone knows that ______ paper was invented by _______ Chinese.
__ it is to have a picnic in the hills on such a nice day!