a) was
b) were
c) was
d) were
e) were
f) was
3. I could ride a bicycle but couldn't swim at the age of seven. Я умел кататься на велосипеде, но не умел плавать в 7 лет.
I could draw but couldn't cook at the age of seven. Я умел рисовать, но не умел готовить в 7 лет.
I could dance but couldn't play football at the age of seven. Я умел танцевать, но не умел играть в футбол в 7 лет.
I could sing but couldn't play piano at the age of seven. Я умел петь, но не умел играть на пианино в 7 лет.