【题目】There is a bird (唱歌) in the tree.
【答案】singing
【解析】根据句意,有一个鸟儿正在树上唱歌。本句是A bird is singing in the tree 的另一种说法。故填singing。
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【题目】There is a bird (唱歌) in the tree.
【答案】singing
【解析】根据句意,有一个鸟儿正在树上唱歌。本句是A bird is singing in the tree 的另一种说法。故填singing。