some questions need helo

填表到了尾聲，還有幾個問題需要幫助：

1． I-485
a. I am applying for an adjustment to resident status because:
Which one I should choose? (My I-140 status is Pending)
2． I-765
What should select for 16?
3． I-131
What should I filed for Class of admission?
4． 如果夫妻兩個的材料在一個信封裏，需要一份結婚公證還是兩份？
5． 我如果在I-765 和I-131 還沒有批的 情況下離境，依然用H1b簽證會美國， 會有什麽情況發生？

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