1．这位太太年龄太大了，不能单独居住。

The lady is                     live alone.

2．那些动物越跑越远了。

Those animals are running                  

3．比尔是所有人中跳得最远的。

Bill jumps                  all.

4．他正努力赶上班里其他同学。

He is trying his best to                  other students in the class.

5．到目前为止，我们只走了两公里。

           we have walked only two kilometers.