run fast 改为否定句
Sam bought a pen yesterday改为否定句 The skirt costs me fifty yuan.改为一般疑问句 She comes from London改为一般疑问句
快,一小时之内!
人气：209 ℃ 时间：2020-05-09 22:34:43
解答
sam didnot buy a pen yesterday.
is this skirt costs you fifty yuan?
is she come from london?
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