Вставьте глагол to be в Present Simple в нужной форме .Переведите предложения на русский язык .
1.It....a serious problem for him.
2. She.... a teacher at the institute.
3. We.... from a small town in the West.
4.You.... really a good hockey player.
5. I..... a conductor at the railway station.
6.They....eating ice-cream at a cafe.
7.I.... good at ecological problems.