2 . The Youth Olympic Games________________(正式邀请，请求) young people to learn and share beyond the field of play. (根据汉语提示填空)

3 . 根据句意，选择单词或短语并以其适当形式填空。

be committed to       bring to light       brighten up to sum up       push the boundaries        spring up get across       keep in perspective        call on throw in the towel       mount up       throw a curveball

1. The newly found papers will ________ what really happened.
2. On hearing the news that his son was admitted into a key university, his face ________.
3. When she was young, she ________ fighting against racial discrimination
4. ________, this edition of the novel is a novel with many outstanding qualities.
5. I speak slowly, but my meaning didn't ________.
6. In the future, more wind power will ________ to meet the demand for clean energy.
7. We ________ the people to work together to build a community with a shared future for mankind.
8. Never set limitations to yourself, and work hard to ________ to be better.
9. Even with a great deal of planning, it's very possible that life will ________ us ________.
10. Though it differed from what you had thought, it helped ________ your problem ________.