Little Mike’s grandma died weeks ago. He missed her very much. One afternoon Mike went to the city park where his grandma used to go. There he saw an old lady. She looked very kind. She was sitting
Many objects that people use each day started with a simple idea. These objects have often changed the way we 46 . Some help us to do a job more 47 . Others fill a need or solve a problem. In
（
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B．
C．
D．
