Чтобы решить данную задачу, нам нужно определить правильные формы слов в скобках, основываясь на контексте текста. Давайте рассмотрим каждое из них.
1. travel
В предложении "Nowadays, there are so many means of transport, from bicycles and buses to sports cars and jet airplanes, that 1) .... (travel) are spoilt for choice." нужно использовать причастие или герундий от глагола "travel", чтобы подчеркнуть действие. В данном случае это слово будет в форме "travellers" (в путешествии).
2. impress
Во втором предложении "There are, however, some means of transport that have made 2).... (impress) on people and have taken their place in history." нам нужна форма, которая позволяет выразить причастие, которое показывает влияние на людей. Это будет "impression" (впечатление).
3. propel
В последнем предложении "A steamboat, as its name indicates, is a boat that is powered by steam. The steam rotates a paddlewheel or 3).... (propel) that in turn causes the boat to move forward." необходимо использовать герундий или причастие. Здесь подходит форма "propeller" (пропеллер), как часть механизма, приводящего в движение судно.
Итак, окончательный вариант текста будет следующим:
Nowadays, there are so many means of transport, from bicycles and buses to sports cars and jet airplanes, that travellers are spoilt for choice. In fact, most of us don't even think about how we travel; plane or train, it doesn't matter. Because, at the end of the day, it's just about getting from one place to the other.
There are, however, some means of transport that have made impression on people and have taken their place in history. One means of transport that truly won the hearts of many Americans was the river steamboat. A steamboat, as its name indicates, is a boat that is powered by steam. The steam rotates a paddlewheel or propeller that in turn causes the boat to move forward.
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