补全对话(5分)  从方框中选择最佳选项完成对话，有两项多余

A:What’s your favourite food?
B    
A:Are they healthy food?
B:   They are healthy food.
A:            
B:My favourite drink is Coke.
A:       
B:No,  it isn’t.  Drinking Coke too much is bad for our health.
A:            
B:Sorry,  I haven’t got any milk here