1, collection

2, different

bai 2/

1, hanging out with friend is very interesting

2, life in the countryside is slower than life in the city.

3 ,the cham ethnic group has a population of about 100000

4, we have a custom to give children lucky money at tet.

Bài 1:

1. collection (n): bộ sưu tập (cần điền danh từ vì đứng sau tính từ valuable; sau tính từ cần một danh từ)

2. different (adj): khác (cần điền tính từ vì đứng sau tobe)

Bài 2:

1. Hanging out with friends is very interesting.

2. Life in the countryside is slower than life in the city.

3. The Cham ethnic group has a population of about 100,000.

4. We have a custom of giving children lucky money at Tet.