Поставьте слова в скобках в нужной форме 1 which is (large), the usa or canada 2 what is the name of the (big) river in russia 3 moscow is the (large) city in in our country 4 there is a (great) number of motor-cars in the streets of moscow than in penza 5 st.petersburg is one of the (beautiful) cities in the world

1 Which is larger, the USA or Canada
2 What is the name of the biggest river in Russia
3 Moscow is the largest city in in our country
4 There is a greater number of motor-cars in the streets of Moscow than in Penza 
5 St.Petersburg is one of the most beautiful cities in the world