把下列话改成一般疑问句和否定句
1.Icantellhimthetruth.
2.MrZhangcanspeakJapanese.
3.Icanseethewordsontheblackboardclearly.
4.Icanhelpyou.
5.WecangotoHongKongforaholiday.
6.Tomcanstayuptilltomorrow.
7.Wecandoourbestforourconstruction.
8.Hecanmovethedtone.
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