Mọi người giúp em với ạ

1. Mr. Thanh started teaching English in Ho Chi Minh City in 2000.
2. It’s not a good idea for you to study at night.
3. This is the first time I have had such a delicious meal.
4. They are not allowed to smoke in the office.
5. The last time I met him was 5 months ago.
6. It is possible for parents and children to spend time together.
7. You are not allowed to take photographs in the museum.
8. The last time I went out for lunch was five days ago.
9. It is the first time I have met such an intelligent student.
10. He started working as a bank clerk in 2001.
11. It is a good idea for us to learn vocabulary every day.