Помогите пожалуйста!!! Срочно, даю 20 баллов!!!

Ответ:

1)You don't need to shout. I can hear you perfectly well. 2)We couldn't go to safari because the trip was too expensive.3)He eats in restaurants because he can't cook.4) I had an aisle seat on the plane, So I couldn't see the landscape below.5)When we used to live in china, I could speak some Chinese, but now I can't say a word.6) Can you play the piano at the age of six?7) He can speak English so fast that i can't understand him.8) I'm afraid, Nickolas can't talk to you now. He has to arrive at school in time.9) I couldn't get a good mark in Literature because I didn't know the theme.10)I can retell my friend the whole story because I had read it.
1)Can.
2)Couldn't.
3)Can,t.
4)Couldn't.
5)Could, can't.
6)Can.
7)Can,can't.
8)Can't.
9)Couldn't.
10)Can.

Помогите пожалуйста!!! Срочно, даю 20 баллов!!!​