Underline the relative clauses in the following sentences. Label the clauses as defining (a) or non-defining relative clauses (b)
(Gạch chân mệnh đề quan hệ trong các câu sau. Gắn nhãn các mệnh đề là mệnh đề tương đối xác định (a) hoặc không xác định (b))
1. Phones are devices that help us capture important moments.
2. My computer, which is a gift from my parents, helps me in my study.
3. l often exchange emails with a foreign student whose native language is English
4. I often play video games with my brother, who is really good at them.
5. My mother loves her phone, which she uses to take photos all the time.
6. I use Internet search engines to find information that is useful for my essay.