Located in Ontario, Canada, the Niagara Falls is the seventh wonder of the world and the fastest flowing waterfall in the world. When I went to tour it, I found there were some truly amazing ways to _______ the waterfall.

One way was to take a _______ to the center of the Niagara Falls. Everyone on board was given a raincoat that looked more like a garbage bag. We would need it later on when we got close to the waterfall. There were huge waves and thick mist (迷雾), although we were still far away from Niagara Falls. Inside the mist, another boat approached us. As that boat _______, we waved hello to the blue-coated _______. After a while, we were as _______ as possible to the waterfall, which was like a wall in front of the boat. The _______ here was white with huge waves that threatened (有……危险) to _______ over the boat. A few minutes was enough to make this a very exciting trip.

Another _______ was to go behind the waterfall. This adventure started with everybody walking into a wet and _______ tunnel (隧道) one by one. It was ________ by several lanterns, making us see the tunnel clearly. As the tunnel came to an end, I could see that we had ________ onto a platform at the foot of the waterfall. Here, I had a good ________ of how thick the waterfall was. It was at least one meter ________.

________ I experienced Niagara Falls, I was shocked by how ________ it was. And I look forward to taking the zip line (滑索) next time to view Niagara Falls from the sky. It will definitely be a wonderful time, too.

I’m not what you call a “good traveler”. Without curiosity to _________, I was unwilling to push my boundaries. But it just shows one is never too old to _________ himself/herself.

South Africa was the _________ surprise. I’d never _________ to go on a safari (观兽旅行). People said it was exciting, but I didn’t think so. However, once I was actually there, I _________ it.

I_________ at a beautiful hotel housed in train carriages on the Selati Bridge over the Sabie River, a hotspot for _________ the “Big Five” — the lion, leopard, rhino (犀牛), elephant and African buffalo.

The train cars are suites (套房) with floor-to-ceiling _________, so every day I’d look out of them to see elephants heading up the river. More _________, I started to develop a great passion for the landscape and the animals, which I’d never__________. I visited a rhino conservation park, where its workers were __________ rhinos badly injured by hunters. I bottle-fed these beautiful babies and hand-fed a black rhino. Being there, the concept of how much __________ these animals faced every day hit me hard.

But the most memorable aspect was the __________ I met. Meeting their families and dropping myself into their culture was __________. It did more good for me. I’ve always been __________ — never readily join in conversation with unfamiliar people. But the experience of __________ so many new people from so many attractive places has been a __________ thing, allowing me to brush off some cobwebs(陈腐)forming for many years.

Seeing the world has helped me __________ my ideas about the world, turning me into a more positive person. That’s what __________ can do. I am __________ not a crazy traveler exactly, but at least I’m making progress.

We had just come back home after a big trip. My 5-year-old boy, Baldwin, couldn't _________ to share our stories with his grandmother. Our final _________ is the Appalachian Trail, one of the longest footpaths in the world. We finished the route without any _________ in 209 days. The _________ was really hard work, but full of fun. The landscape along the way was _________, with green woods and wild animals like kangaroos. My husband and I had little time to _________ our own physical pain from walking so many kilometers, but tried hard to keep our little boy happy and excited. When we were tired, we got to eat Skittles, a colorful sweet treat, to make my son_________. We slept in a tent, _________ at 5: 30 in the morning and walking all day. Talking with other hikers along the way prevented _________ and brought extra joy.

My son was even several months __________ than “Buddy Backpacker”, a boy who once held the record for the youngest person for the route. We had been hiking __________ my son was two years old. We took every opportunity to go outside and __________ the world. It may seem like an impossible activity for a child. However, it turned out that he was strong enough to __________ it. My son's trip earned __________ from Dale, the oldest person to hike the route. He said, “It's going to change his life forever. Baldwin has gone through some hardships, making him stronger. This challenge contributes to his social and __________ development. He will smile through his life.”