根据英语翻译以下短语并完成句子。
1. focus upon _____
2. focus one's attention on sth.____
3. focus one's thoughts on _____
4. focus one's efforts on____
5. The discussion____ three main problems.
讨论集中在三个主要问题上.
6. In this scene, the camera ____ the actor's face.
在这个镜头中,摄像机对准演员的脸部.
7. I quickly____ the children.
我赶快把照相机对准了孩子们.
8. He ____ surfing the Internet day and night.
他一门心思都集中在了日夜上网上了.