1. The changes of our life 1. have brought 2. was swimming 3 will find 4. is preparing 5.

1. The changes of our life 1. have brought 2. was swimming 3 will find 4. is preparing 5. chose us much happiness over the past 30 years.
2. Bob 　 with his friends in the river when it suddenly started to rain.
3. I 　 out who did it even if you don’t tell the truth.
4. Don’t disturb him. He 　 for tomorrow’s test.
5. Mrs Zhang 　 some fresh vegetables and put them in the basket

解析：1. 本题的含义为在过去的三十年期间，我们生活的改变给我们带来了很多幸福，本题使用完成时态，结构为have+动词带来的过去分词brought，故本句空格处填have brought。2. 本句的含义为本句的含义为鲍勃和他的朋友正在河里游泳，突然天气开始下雨，本题的主语为过去进行时，结构为was+动词游泳的现在分词swimming，故本句空格处填was swimming。3. 本句的含义为即使你不告诉我真相，我也要弄清楚谁做的，find out表示弄清楚的含义，本题表示的是过去，故本句空格处填find 的过去式found。4. 本句的含义为不要打扰他，他正在为明天的考试做准备，本题使用了现在进行时，结构为is+动词准备的现在分词preparing，故本句空格处填is preparing。5. 本句的含义为张女士选择了一些新鲜的蔬菜，把它们放在篮子里，故本句空格处填选择的过去式chose。

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