Question

look fine look happy区别

uring this summer vacation, I went to work in a restaurant so that I could increase my social experience. Although it was only on   16  ,I made many friends there. 
 On the first day, I found there were so many people in the restaurant. At the beginning, I just felt I was a little useless because I did not  17   what to do. Other waiters all looked very 18  and were busy working with smiling faces. At that time, a strong boy came up to me and  19  me how to work.  
During supper, the boy who helped me sat by my side and said to me,”My name is Paul. This afternoon your performance was very  20  , and I think you should call me’teacher’.”I said, “Thank you for  21  me, and I think we can be friends, do you think so?”  The first day ended, I was so  22   that I fell asleep as soon as I lay down on the bed.  As the days went by, I was used to the life there. .
第18个是fine还是happy

Answer 1

乐意为您解答！
这里选look happy
look fine指的是看起来还好（一般指不是很伤心或者很生气），For example: Does he look upset? - No, he looks fine.

look happy就是说看起来很开心的意思，这里后文有提到"were busy working with smiling faces"，因此可见是很开心所以选择look happy