1. If Mr. Binh didn’t work with some Australians; he wouldn’t use English every day.
2. The letter that I received this morning had good news.
3. You could enroll in this course if you had an English certificate.
4. The woman with whom my mother is talking is/comes from England/is English.
5. If I were you, I would read English newspapers to improve the reading skill.
Chúc bạn học tốt :)