1.The doctor advises him to relax more, or he will be sick 
2.The Americans love steak, and they love hamburgers,too.                                 
3.Burgers are very tasty, although they are not very healthy.                                        
4.My father likes tea, but I prefers coffee.                                            
5.He was very hungry, so he ate all the cakes                            
6.Sam went to the dentist's, because he had a toochache.               
7.We wanted to go to the cinema, but there weren't any seats left.    
8.Don't tell Mary about her birthday party, or you'll spoil the surprise.