Ski:
I don't like riding on skis, because I think it is very dangerous.
Well:
You did this exam very well.
My sister:
My sister won the competition in Mathematics and won a medal.
My brother:
My brother isn't good at studying, that is why I always help him with his homework.
Not ski:
When we went to a ski centre, I did not ride on skis because I was scared to fall.
Ответ:
1.am.2.Are,aren't,are.3.is.4.are.5.İs,is,is.6.are,are.7.Am,am.8.is.9.Are,amn't,am.10.are,are
1)He have to be friendly
2)He mustn't be <span>two-faced
3)He needn't to be very smart</span>
1.does, тут должно быть haves.
Ну или можно:
doesn't, doesn't.
2.Do,don't.
3.doesn't, Does.
4.don't, do.
5.doesn't, Does.