Read and choose the correct answer:
Dear Sam
I am writing to tell you about my summer holiday. Last week, my family and I went to Phu Quoc Island by plane. I really loved the beach so I got up very early to go swimming in the sea. My sister liked sunbathing but I loved going on a boat trip to explore the Island. Yesterday, my sister and I went to a party. The seafood there was excellent. Next weekend, I think I will be in Nha trang to visit my grandparents. I don't know that I will do, but I may go climbing with my father.
Love, Tam
Question: Where was tam last week?