Вопрос по английскому языку:

Помогите пожалуйста, нужно раскрыть скобки и поставить в нужную форму.
complete the sentences with the correct form of the adjectives in brackets:
a. These trousers are (comfortable) than those jeans.
b. She is (happy) now than he was last year.
c. You are the (pretty) girl in class.
d. The red dress is the (attractive) in the shop.
e. I always tell the (fun) jokes.
f. My hair is (short) than yours.