1.     单句改错。每个句子有一处错误

1. （1） My favourite picture at the party is of my coach and me enjoy the biscuits with happy laughter!
   
3. （2） Lots of studies have been shown that global warming has already become a very seriously problem.
   
5. （3） Before getting into the car，I thought I had learned the instructor's orders，so once I started the car，my mind goes blank.
   
7. （4） What I care for is not what he can learn at school but whether he can build up his confidence in the new environment.
   
9. （5） Many tents have put up to provide temporary housing for the people in the disaster ­hit area.
   
11. （6） As neither of us would give away, the bargain came to nothing.
    
13. （7） After graduate from college, they made up their mind to go and settle in the countryside.
    
15. （8） As far as I'm concerned, this sentence is not easy to explain it.
    
17. （9） I managed to persuade my classmates to accepting my idea.
    
19. （10） If you feel the urge for a cigarette, try not to give up to it.