1.We need to find a solution to the problem as soon as possible. SOLVE
2.Juan speaks English fluently and makes very few grammatical mistakes. (grammar)
3.The teacher keeps a record of every student's attendance (attend)
4.Air-conditioning is a necessity if you live somewhere like the south of spain (necessary)
5. Don't be afraid of the dog. He's absolutely harmless (harm)
6.The company is trying hard to improve customer satisfaction (satisfy)
8.We're going to change our suppliers as they have become very unreliable in the last year