用括号内所给词的适当形式填空。

1. My shoes are worn out, so I must get them ________ (repair).

2. She gave up her job and concentrated on _______ (draw) comies.

3. My parents don't allow me _______ (choose) my own clothes.

4. Teenagers should _______ (allow) to get a part-time job during their spare time.

5. There are some _______ (diffcrent)  between them.

以下关于铲运机的叙述正确的是( )。

A．铲运机不适宜开挖含水量不超过27%的松土和普通土

B．铲运机的开行路线都是环形路线

C．铲运机多用于开挖小型基坑和填筑路基用

D．铲运机常用施工方法有：下坡铲土法、跨铲法和助铲法等