Exercise 1:
1. an
2. a
3. any
4. an
5. some
Exercise 2:
1. She is 13 years old and she is now in grade 8.
2. She has a younger brother and his name is Bruce Walkers.
3. My father works on our farm in the countryside.
4. How many oranges are there in the bag?
5. Ao dai is usually wear by young women.
6. Some students were offered scholarships to study abroad.
7. My mother does the housework and she helps on the farm.
8. Is is easy to find an apartment in Ha Noi.
9. The puppets are supported by strings under the water.
10. I am looking forward to seeing you there.