为什么问题 : "Wèishéme" wèntí : "Why" Questions

Qǐng gēngzhèng ma?
请更正吗？
Corrections, please?

1) Why are you in China?
Nǐ wèishéme zài zhōngguó

2) Why are you learning Chinese?
Nǐ wèishéme xuéxí zhōngwén?

3) Why are you adopting a child?
Nǐ wèishéme yào shōuyǎng yīgè háizi? (or is adopting Lǐngyǎng?)
<font style="background-color: yellow;"> Both shouyang and Lingyang is OK. And it's yi(second tone) ge. When "yi" is a number we say first tone, but when it combine with "ge", we say it in second tone.</font>
4) Why do you live in Israel?
Nǐ wèishéme zhù zài Yǐsèliè?

5) Why aren't you working?
Nǐ wèishéme bù gōngzuò?

Thank you!!
Xièxiè