问题描述：
( )The little girl_____TV all day.She did nothing.A.keeps watching B.kept to watching C.keeps to
watch D.kept watching The number of students in our school____(is,are)4000and a number of them ___(is,are)good at playing ping pong.
watch D.kept watching The number of students in our school____(is,are)4000and a number of them ___(is,are)good at playing ping pong.
问题解答：
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