根据答句,填写恰当的疑问词
whowhatwhereHowwhose
1()ismybikeIt'sneardoor.
2()isbetty?Ithinkshe'satdoor.
3()isinthetree?Aredapple.
4()pencil-boxisitit'shispencil-box.
5()areyou?I'smfine
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