ДАМ 100 БАЛЛОВ.. решите пожалуйста

Ответ:

1Russia is bigger than america

2 I can run faster than you

3 the dress is cheaper than than the cost

4 he is the taller in our class

5 she is goodest(не уверен) student in our class

6 have you got this jeans in a largest size?

7 a rose is the most beautiful flower

8 BMW is more expensive than Toyota