Ответ:

1. At that moment Mr. Black is answering the questions.

2. Right now we're buying souvenirs to friends.

3. Tomorrow from five (5) to seven (7) p.m. she is going to help son with lessons (homework).

4. Yesterday at lunch we were walking in the park and eating ice cream.

5. Yesterday from three (3) to five (5) queen was talking to journalists.

6. Yesterday I whole day was chatting with friend.

7. Your child are chewing two (2) bubblegum at a time.

8. When I will read, you will play computer.

9. Right now we're going to go out of town, tomorrow at that time we are coming back.

10. On Sunday at 5 o'clock we were drinking excellent tea in London café.

Ну, как-то так