Question

Помогите! Пожалуйста! Завтра нужно сдать!!! 25 баллов!
use the word sure to say the same.

Пример:Your friends are certain to come to say happy birthhday to you.
Your friends are sure to come to say happy birthday to you.

1) will you stay with us at the weekend, John? - Сertainly? we have so much to do togerher.
2) I think the new boy`s name is Steve, but I am not certain of it.
3) Learn the new words for tomorrow and be gyiet certain about it
4) is Jane certain of the facts?
5) I fell certain that the trip will be great fun.
6) Are you coming with us, Alice? - certainly. I want to see the new film too.
7) I think she was born in 1980 but i`m not certain.
8) my dad is certain to know all about this country
9) Will you play basketball with us, Alice? - I`m not certain. I don`t feel well.
10) Сolin is certain to help you with your problem. Talk to him.

Answer 1

1)Certainly - surely
2)Certain of it - sure of it
3)certain of it - sure about it
4)Is Jane certain of the facts- Is Jane sure of the facts?
5)i feel certain-I feel sure that ...
6)certainly - surely
7)i`m not certain -i`m not sure
8)is certain - is sure 
9)i`m not certain - i`m not sure
10)Collin is certain to ...- Collin is sure to..