Помогите пожалуйста 3 ех умоляю
1 I can run fast.
2 I can't speak Chinese.
3 I could read when I was six.
4 I couldn't swim when I was seven (but now I can).
5 I was able to answer all your questions.
6 I'll be able to help my mum at the weekend.
спасибо большое