Как правильно 1. paper isn't made from plastic. или 2. paper aren't made from plastic. ?

Paper isn't made from plastic.

1. Paper isn't made from plastic.
(единственное число) paper isn't made 
(множественное число) papers aren't made  

Это называется настоящее перфектное время!)))
1 I have been to Paris.
2 She has begun reading a new book
3 The boy has just broken something in the kitchen
4 Father has brought a puppy!
5 The woman has already bought the dress
6 Have you chosen what you want to eat?
7 Mom has just come home - she is resting now
8 Look! I have just cut my hair! Do you like it?
9 They have not done housework yet - there is too much of it.
10 He has never drawn such beautiful women before...
11 Sorry, we have no milk: somebody has drunk it
12 "I wonder: who has eaten the royal cake?!!"

We have no oil , go on the way home store and buy 200 grams. At the same time визльмы 300 grams of cheese. I'm going to bake a cake , I потрубно 5 eggs , a glass of sugar , 200 grams smetana , 2 cups flour. Цукарь , flour and eggs I have , and sour cream over . Peter , run to the store and buy the sour cream. If fresh cheese , buy 2 packs. Weigh me , please , this piece of mutton. How much should I pay ? - 8 UAH. - And where is the cash ? - To the right . What to buy in the grocery store ? - Package of potatoes , a kilo of onions , half a kilo and a jar of pickles and green peas. Make dinner мьясний salad. In the refrigerator is a piece of boiled meat. When you go to a pharmacy , go on the road in the bread and piles of half a loaf of black bread and 2 rolls. Next to our house a large supermarket . I love it to make purchases.