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1. listen，hear与sound
(1)
the news, she couldn't help laughing.
(2)
—What about going out to walk for a while?
—That
wonderful.
(3)
Peter learns English by
to the tapes.
【考点】
动词原形; 动名词; 动词辨析;
【答案】
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选词填空（多句）
普通