c) Underline the topic sentences in the main body paragraphs in Model 1. Replace them with other appropriate ones.

Original topic sentences: * "To sum up, package holidays have both pros and cons." * "On one hand, they are cheap and convenient, but on the other hand they can be restrictive." Revised topic sentences: * "In conclusion, package holidays offer a mix of benefits and drawbacks." * "Package holidays provide affordability and ease of planning, but they may limit flexibility and personal choice."