There is a mistake in each sentence. Find and correct it. (Có một sai lầm trong mỗi câu. Tìm và sửa nó.)
1. We lived here since 1990. We all enjoy living in this neighbourhood.
2. Have you finished did your homework?
3. They want trying the new device because it is very useful.
4. I have used this smartphone during 20 years. It is old now.
5. We have recent bought a new laptop.
6. Design a new invention is not easy.
7. I have tried everything but it is really difficult for remove this stain.
8. Everyone has met at the meeting yesterday and we had a great discussion
