Помогите с английским кто шарит.

Упражнение 1. Выпишите из каждого предложения подлежащее и сказуемое, определите время и залог, объясните употребление времен группы Continuous.
1. I am at my English lesson. I am sitting and doing my exercises. My friend is not sitting, he is standing at the blackboard and looking at me. 2. It is getting cold now, isn't it? Look out. Is it raining now? 3. You are late. What were you doing? I was translating a text. 4. When I came home my parents were having supper and at the same time they were watching TV. 5. What was he doing when I rang up an hour ago? He was looking through a newspaper when I rang up.
Зарание спасибо!