IV.
1. If we have free time, I will visit my grandmom.
2. Lan always sends her letter to her friend.
3. He isn't interested in buying a new house.
4. My father is sociable and generous.
V.
1. Unless she studies hard, she will fail the exam.
2. Minh spends 2 hours doing his homework everyday.
3. This is the first time they have ever met her new teacher.
4. He is going to come over to pick you up.
5. Her hobby is riding in the mountainous area at weekends.
Study well !
