Ⅰ. 单句语法填空
1. What is known to us all is that National Day in celebration (celebrate) of the 60th anniversary of PRC excited people across China.
2. Once you have finished, put your sheet in the envelope marked (mark) with your name.
3. I have lent him ten magazines, most of which are more wonderful than you can imagine.
4. Parents hope that their children can be educated in a relaxing (relax) and active atmosphere.
5. The unreasonable taxes should be abolished (abolish) without exception.
6. George is going to talk about the geography of his country, but I’d rather he focused/should focus (focus) more on its culture.
7. I refuse to trade with that company again. They keep cheating us on the bill.
8. The black slaves fought for their freedom (free) for many years, and finally succeeded.
9. We have no idea how to persuade him to give up the crazy idea.
10. To be honest, I preferred the original (origin) plan.