In spanish, an upside down exclamation point is used both before and after exclamation?

Yes. It precedes the sentence and follows after. It's different from english

The nosotros and vosotros forms of the word

3. study 4.eat 5.play american football 6.write a card 7.practice piano 8.swim in the pool 9.paint a mural 10.listen to the band 11.dance at a party 12.drink milk 13.visit panama 14.open the card 15.prepare dinner 16.stay in the house 17.watch tv 18.write on the paper 19.study spanish 20.examine the paintings in the museum. i hope this : )