Объедините два предложения в одно, используя Present Perfect Continuous.
1) Natasha began to write a composition an hour ago. She is still writing it.
2) He began to repair his motorbike in the morning. He is still repairing it.
3) It began to show half an hour ago. It is still snowing.
4) She began to bake a cake 30 minutes ago. She is still baking it.
5) They began to do aerobiks 4 vjnths ago. They are still doing it.