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.