1. We should f___________ our attention on the following problem. 2. You can’t a____________ success without hard work. 3. You must be c_______________ to go walking in such bad weather. 4. She is very s_______________ with his students. 5. Without your s______________, I can’t finish it on time. 6. It is such v___________________ information. 7. The conductor kept o_________________ hot water. 8. I want some s________________ about what to do today.