9．Yesterday Professor Wang gave us a l________ in Beijing University.

8．Hearing the astonishing news，everyone present had an a________ look on each face.

7．Which of the metals in the table ________(反应)the most with ________(氧气)and water?

6．Iron does not r________ in air­free water.

5．We use ________(电)to provide power for machines.

4．When you heat metal，it e________.

3．G________ brings things down to earth.

2．Have you set the ________(设备)up yet?

1．Try a different m________ if the first one fails.

假设你是红星中学高二(1)班的学生李华，利用上周末的时间帮助祖父母安排了去北戴河的旅行。请根据以下四幅图的先后顺序，写一篇英文周记，叙述你从准备到送行的全过程。

　　 注意：1．周记的开头已为你写好。

　　 2．词数不少于100字。

Last weekend, I helped my grandparents prepare their trip to Beidaihe．