问题描述：
动词的过去式后面的动词用什么形式?
例：1.I saw Tony always in class.A.slept B.sleeping C.sleep
2.Miss Li noticed the naughty boy to her carefully.A.listens B.listened C.listen
例：1.I saw Tony always in class.A.slept B.sleeping C.sleep
2.Miss Li noticed the naughty boy to her carefully.A.listens B.listened C.listen
问题解答：
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