I.

1.The problem is too difficult for me to solve

2.I wish our teacher were here at the moment

3.John used to smoke cigarettes when he was a young man

4.This is the first time i have eaten this kind of food

5.Mount Everest is highest mountaint in the world

II.

1.Both Jane and her sister are quite warm and friendly

2.Before i had a chance to thank him,he had gone

3.It was such a long and difficult exam that i was completely exhausted at the end

4.I'll post the CD today so that you will get it by the weekend

5.I'm going to buy either a camera or a DVD player with the money

#We_are_ONE!

1.the problem is too difficult for us to solve 

2.i wish our teacher were here at the moment

3. john used to smoke cigarettes when....

4.this is the first time i have eaten this food

5.Mount Everest is the highest mountain in the world