a. Mia: Hey, have you started revising for the graduation exam yet? b. Sam: That'd be awesome. We could quiz each other and sort out the tricky topics. c. Mia: Perfect! Let's meet at my place on Saturday and power through those practice tests. d. Sam: Yeah, I've been hitting the books hard, especially for math. It's tougher than I thought! e. Mia: Tell me about it! I'm freaking out over chemistry. Want to study together this weekend?

a. However, this sudden exposure can be overwhelming, placing immense pressure on its delicate ecosystem and resources. b. Once considered a hidden gem, known only to a few locals and accessible via an unmarked trail in the early 1990s, its visitor numbers have dramatically surged. c. A prime example is Horseshoe Bend, a spectacular U-shaped curve in the Colorado River. d. Social networking platforms, particularly Instagram, have acted as a powerful catalyst for this transformation. e. The rise of social media has profoundly transformed how natural landmarks are discovered and experienced.

Dear Ms. Lan, a. A few local singers, including Minh Anh and Quoc Bao, have already expressed their willingness to perform without charge. b. Our community has recently shown great interest in supporting families affected by last month's floods, and a benefit concert could turn that goodwill into meaningful action. c. The town square would be an ideal venue, as it can accommodate both the audience and the equipment needed for live music. d. Please consider this idea as a way to blend music, compassion, and community spirit into one remarkable evening. e. With your charity's experience in event coordination, this collaboration could bring energy, unity, and much-needed funds to those in need. Best regards, Nguyen Phong

a. As a guardian of cultural diversity, UNESCO's initiatives have been pivotal in countering the destruction of invaluable heritage due to conflict, climate change, and urbanization. b. However, the protection of world heritage sites often faces significant challenges, such as funding constraints and political instability, which hinder preservation efforts. c. Therefore, UNESCO's role in monitoring and advocating for the conservation of heritage sites serves as a crucial mechanism for promoting global responsibility and intergenerational equity. d. UNESCO's commitment to safeguarding cultural heritage is integral in fostering a deeper global understanding and appreciation of diverse civilizations. e. Through international cooperation, UNESCO strives to deal with those challenges in the preservation of heritage while ensuring sustainable development.