Помогите ответить (Вопросы по грамматике английского последний №3 )

Question

Раскройте скобки, употребляя глаголы в требующейся форме.
12) If my T-shirt hadn`t been 100 percent cotton, it (not to shrink) so much.

14) If they (to go) by car, they would have saved time

15) If I (to be) a bird, I wouldl be able to fly.

16) If he (to bring) his book home, he would have done his homework last night.

17) If my mother (to win) a million pounds, she would spend it as fast as possible

Сергей Данченко · Accepted Answer

12) If my T-shirt hadn`t been 100 percent cotton, it woouldn't have shrunk so much.
14) If they had gone by car, they would have saved time 
15) If I were a bird, I would be able to fly.
16) If he had brought his book home, he would have done his homework last night.
17) If my mother won a million pounds, she would spend it as fast as possible

Татьяна Бужак · Answer

12) If my T-shirt hadn`t been 100 percent cotton, it woouldn't have shrunk so much.
14) If they had gone by car, they would have saved time
15) If I were a bird, I would be able to fly.
16) If he had brought his book home, he would have done his homework last night.
17) If my mother won a million pounds, she would spend it as fast as possible