根据题目要求,完成下列句子。
(1) She likes to eat watermelon . ( 对该句进行提问)
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(2)I think so . ( 将该句变为否定句)
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(3)She works in a bank . ( 变为一般疑问句)
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(4)He is my grandfather . ( 对画线部分进行提问)
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