=> V/ 1. is learning 2. will visit 3. fishing 4. finishes 5. did/do 6. haven't gone VI/ 1. No, it wasn't. 2. He stayed at the friend's house. 3. His friends took him to see a lot of interesting places in Nha Trang such as Cham Temples, Hon chong, Tri Nguyen aquarium... 4. Yes, he did. 5. He saw sharrl,dolphins and many different types of sea fish.
