This document discusses various modes of transportation and their costs, provides examples of transitional words and their functions in sentences, and presents exercises reviewing the use of transitional words in compositions. It begins by asking which mode of transportation is the most expensive, listing subway, freeway, and highway as options. It then gives examples of transitional words like "however" and "for example" and their functions. The rest of the document consists of exercises for learners to practice using transitional words like "moreover," "furthermore," and "in conclusion" when writing compositions on various topics.