Chia động từ quá khứ đơn
5. Last January I _____ Sword Lake in Ha Noi. (visit)
6. My grandparents ____ very tired after the trip. (be)
7. I _______ a lot of gifts for my older brother. (buy)
8. James and Belle _______ sharks, dolphins and turtles at Vinpearl aquarium. (see)