Ⅰ.单句语法填空
1．Teachers are guiding their students through research on the ways food is linked to environment, poverty (poor), and people's health.
2．In the depth (deep) of my memory, many things I did with my father still live.
3．She devoted herself entirely (entire) to her research and it earned her a good reputation in her field.
4．I wish I could do something in return for the kindness I have received from him.
5．Your camp provides a good chance for me, where I can know more about other countries, and in turn tell them something about China.
6．There is only one earth on which we can live, so we cannot afford to waste (waste) any land resources.
7．It is essential to keep (keep) the two groups separate.
8．The computer has been in use for many years, far beyond its guaranteed life span.
9．I'm thinking about making a switch to a smaller company.
10．No one can prevent this plan being carried (carry) out.
