选择句子中错误的一项。(20分)
You ＿＿＿ running and I＿＿＿ dancing.
Look ＿＿＿ the people ＿＿＿ the park.
They are ＿＿＿ a boat.
-What are they doing? -＿＿＿＿ playing football.
选出不属于同类的单词。
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