1.KATE IS ABLE TO use the computer-- Kate can use the computer.
2.You ARE FORBIDDEN TO eat or drink in class--You mustn't eat or drink in class.
3.You ARE OBLIGED TO tidy your room at the weekend--You must tidy your room at the weekend.
4.LT'S A GOOD IDEA TO eat a lot of vegetables--You should eat a lot of vegetables.
5.THERE'S A POSSIBILITY it will snow tonight--It may snow tonight.