Вопрос по английскому языку:

Complete the sentences.Use as or then.
СРОЧНО РЕБЯТ ПОМАГИТЕ )))

1)The Oka is shorter ... the Volga.
2)Ben is ... strong as his brother.
3)Andrew is not so tall ... Jack.
4)The weather in spting is more pleasant ... in late autumn.
5)My bedroom is as comfortable ... my sitting room.
6)My new book is more interesting ... the old book.
7)The flowaers on the flowerbed are not so beautiful ... the roses under the window.