问题描述：
who ovor there -----Lily are Lucy
——Who are____ovor there?
-----Lucy are Lily
A is dancing B are dancing
------Who_____basketball ovor there?
------My teather
A play B playing C plays D to play
——Who are____ovor there?
-----Lucy are Lily
A is dancing B are dancing
------Who_____basketball ovor there?
------My teather
A play B playing C plays D to play
问题解答：
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