2. 当秋天来的时候，树叶变成橘黄色、红色和金黄色。

When autumn comes, leaves 　　　　　　　　　　　　orange, red and gold.

1. 他们也进行了其他的试验。

They also 　　　　　　　　　　　　other experiments.

5. 　　　　　　the notes while listening to the teacher.　

4. Mr Li 　　　　　　gardening after he retired.　　

3. Can you 　　　　　　what I am saying?　　

2. He expects to 　　　　　　the business when his father retires.　　

1. He opened the drawer and 　　　　　　a notebook.　

5. Most of them were in good c　　　　 .

4. The desert was once a green land with trees, but even that didn’t prevent the city from being b　　　　 　by sand-what a pity!

3. It continued to erupt for the next three days. U　　　　 , all the people were buried alive, and so was the city.