到达；做完；通过；度过；打通

一到达山顶，我就体验到了一种幸福感和成就感。（upon）

On ________(到达) at the police station, they were taken to an interview room.

1.Their unexpected         (到达)threw our plan into confusion.

2.We spent two hours analysing the team’s strengths and           (缺点).

3.Flying across the Atlantic for the first time was a great            (成就).

4.The teacher showed          (特别的)concern for the disabled girl.

5.The writer has a           (独一无二的) style, which makes him world-famous.

6.It’s illegal to read people’s private letters without p          . 

7.No one knows the o        of life on earth.

8.They have e           the business by opening three more stores.

9.The room is 15feet in l        and 10feet inwidth.

10.Mount Tai has become a tourist a          all over the world.

看到一片片垃圾在水面漂浮，我意识到了保护环境是多么的重要啊。(三种表达)