单句改错

1. It is a lot more excited to travel by air than by  water.        

2. You can see falling leaves everywhere in autumn.        

3. On arriving home, she found her husband looked worried.        

4. Losing in thought,he didn't hear what his teacher said at all.        

由国家制定或认可，靠国家强制力保证实施，对全体社会成员具有普遍约束力。这是 [ ]

A、道德的维持力量                  

B、社会生活中的规矩          

C、法律最为显著的特征              

D、构成犯罪的基本特征