1. Last year, they **built** this house.
2. At the moment, we **are cooking** in the kitchen.
3.1 I **stayed** at home yesterday. I **didn't do** anything because I was ill.
4. Last night, when we **came** home, the light **went** out.
5. When I **was watching** TV, she **was having** dinner with her family.
6. When we came to their house, Mr. Black **was reading** a newspaper while his wife **was cooking**.
7. "Listen! Someone is knocking at the door." --- "Well, I **will open** the door."
8. "Why did you buy so much paint?" "Oh, I **will decorate** my room this Sunday."
9.1 I **have been learning** English since 2018.
10. She is a novel writer. She **has written** 4 books so far.
11. My father is visiting France. He **has phoned** home several times.
12. This is the most beautiful picture I **have ever seen**.
13. My father **started** working in that company in 2020. He **has been working** there for 12 years.
14. 1 **have lived** in Hanoi for 4 years. Now I'm in Vinh city. I **have been living** here for 20 years.
15. They **have been learning** English for three years. They **are cleaning** the doors.