原来三个句子：我们要按时完成作业.James小姐让我们这样做.James小姐让我们按时完成作业.
改写：Ms.James tells us to finish our homework on time,so we have to do it.
James小姐让我们按时完成作业,我们要做到.
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哦,看到你补充才明白原来是填3个词啊.
应该填us to finish
Ms James tells us to finish our homework on time.