题目内容：

语法填空

阅读下面短文，按照句子结构的语法性和上下文连贯的要求，在空白处填入一个适当的词或使用括号中词语的正确形式填空。

Some years ago, I went to Australia with my friend, Chris. We decided to drive across the country to Brisbane. The drive was going to take four days and most of 1. was across the desert.

The first day was a lot of fun as we were excited and 2. (laugh) at each other's jokes. By the third day of driving in the seemingly endless desert, we began to get bored. We had been quiet 3. a few hours when Chris found some kangaroos in the distance. We decided to get a closer look. Chris speeded up 4. (catch) up with the kangaroos. We were very close to the kangaroos—too close—when we heard a loud BANG!

Chris 5. (stop) the car and we got out. Behind the car was a large kangaroo lying6. (complete) quiet on the ground. Chris went over to the kangaroo and put his baseball cap on its head. He took off his sunglasses and put them on the kangaroo and did the same with his jacket. Then he put his arm 7. the kangaroo and told me to take a photo of them together. While I was ready to take 8. (photo), the kangaroo suddenly woke up, looked at Chris, and jumped away into the distance before we could do anything.

I started laughing but Chris looked very serious. He said his wallet and passport were in the jacket. I started laughing even 9. (hard). I stopped laughing, however, when he said 10. our car keys were also in the jacket!