More money ____________ when we use both sides of paper.
—Do you know the man wearing a pair of glasses?—Yes. He’s a teacher of ________. He teaches ________ History.
_____ warm idea came to me that I might use ______ pocket money to buy a gift for my mother on Mother’s Day.
The words _________ by Miss Li are marked ________ red.
Alice is famous ________ her paintings.
Mike is my good friend. He often helps _______ with my English.