----- Nội dung ảnh ----- 3. The historians and researchers were puzzled. 4. The parachute jump was a(n) exhilarating experience for the boy. He was so excited. 5. Mary had an pleasant experience putting up a tent in the rain. 6. He felt helpless when he couldn't protect himself from bullying. 7. He studied German in college and practised it regularly since then. 8. My friends have travelled to Asia last year and explored many countries in the region. 9. I finished reading a book yesterday, and I already started a new one. 10. She lived in London for a year and has miss the city ever since she moved away.