Here's a filled-in version of your text with the correct words placed in the blanks:
"Travelling is one of the great pleasures in life; it offers many ways to explore the world and leaves indelible memories. Whether by air, land, or sea, each type of transport provides its own unique experiences. Air travel, due to its speed and efficiency, is popular with those who want to travel long distances quickly. Car trips allow travellers to enjoy the journey itself, discovering hidden gems such as quaint cities and breathtaking landscapes along the way. Travelling by train attracts many with its scenic routes and leisurely pace, often leading to iconic cities. Ultimately, the choice of travel method and destination often reflects individual preferences and a desire for adventure, cultural immersion, or relaxation."
This revised text maintains the original intent while adding the appropriate words.