1 . 用方框中所给单词的适当形式填空，每词仅用一次。

down        base            concerned       stick       win

1. We should ________to our dream no matter how difficult it is.
2. The _______of the speech competition has been decided by the five teachers.
3. Tim has been feeling _______because of his low test scores.
4. Lucy hasn’t been back home and the family are all______about her safety.
5. The film that is _____ on a true story is popular with young people.

2 . 选词填空：basis/base
1. Gunfire was heard at an army _______ close to the airport.
2. This article will form the _______for our discussion.