1 . British brothers James and Thomas Lindesay have spent months traveling across the Great Wall of China on foot. They ______ 3,263 kilometres, a remarkable achievement at any time.

Their ______ to complete this adventure came from their father, William Lindesay, who______ along the Wall decades ago and attracted a great deal of media attention. Born in 1956 in Liverpool, William became ______ about the Wall later in his life. In 1987, he made the ______ in China by hiking the Wall. He has committed over 30 years to the protection of the structure, and has ______ 10 books on the Wall based on his knowledge and experiences.

His action and books influenced his two sons, who now share his ______ in the Wall. In 2016, the Lindesay brothers flew drones (无人机) at many ______ along the Wall and edited video works on the ______ of the Wall, hoping to keep it safe from damage. Not ______ with merely documenting parts of the Wall, the young brothers ______ wanted to find a new way to experience the structure and finally they ______ hiking its length, following in their father’s footsteps.

The brothers’ trip was ______ than they had imagined. They met many difficulties. But______ the great wonder was life-changing, which gave them a better ______ of the structure and the history behind it.

2 . Ciudad Perdida, Colombia’s “Lost City” is older than Machu Picchu. There are no trains or buses allowing of ________ travels to reach its ruins. The remote place is only ________ on foot: a tiring multi-day hike.

Despite this, I couldn’t ________ the opportunity to visit Ciudad Perdida. Twelve other hikers and I went there in ________ with a licensed guide. The dirt path, which ________ through towering palms (棕榈) and hanging vines (藤蔓), proved ________ right from the start. It’s recommended that hikers have good general fitness, as the journey is tough. Along the way we also met the ________. They have been cut off from the outside world for centuries and there’s a deep ________ between them and the land.

The next morning, we were off early to ________ the heat, but high temperatures and muscle pain had already ________ by the time we reached the final stage—1,200 stone steps to ________After finally lifting my painful body up the long flight of stairs, my eyes rested on scenery that had ________ the backbreaking journey: Ciudad Perdida.

I looked down and ________ at the beautiful site below. We were among a handful of other groups visiting, which seemed like nothing compared to other crowded tourist attractions. While the return trip included overcoming the mental barrier of having already achieved our goal, the experience is the one I would do ________. It is the difficulty that makes the journey a more ________ one. Earned views are always better.

4 . My husband, our children and I have had wonderful camping experiences over the past ten years.

Some of our _______ are funny, especially from the early years when our children were little. Once, we _______ along Chalk Creek. I was _______ that our 15-month-old boy would fall into the creek (小溪). I tied a rope around his waist to keep him near to our spot. That lasted about ten minutes. He was _______, and his crying let the whole campground know it. So _______ tying him up, I just kept a close eye on him. It _______ — he didn’t end up in the creek. My three-year-old, however, did.

Another time, we rented a boat in Vallecito Lake. The sky was clear when we _______, but storms move in fast in the mountains, and this one quickly _______ our peaceful morning trip. The _______ picked up and thunder rolled. My husband stopped fishing to ____________ the motor. Nothing. He tried again. No ____________. We were stuck in the middle of the lake with a dead motor. As we all sat there ____________, a fisherman pulled up, threw us a rope and towed (拖) us back. We were ____________.

Now, every year when my husband pulls our camper out of the garage, we are filled with a sense of ____________, wondering what camping fun and ____________ we will experience next.