The key to exercise solutions in chapter 7f - Writing for the textbook On Screen B1+ - Student's Book with authors Virginia Evans and Jenny Dooley from Express Publishing
Question
Expand the prompts into full supporting sentences.
Write appropriate topic sentences for each set of the supporting sentences in Ex. 8a.
Answer
1) To begin with, vitamins help to boost the immune system. For example, when you have a cold, vitamin C will help you to recover quicker.; 2) Firstly, yearly gym subscriptions can be expensive. This is because, people pay fees even if they don't attend.; 3) In the first place, losing weight is easier if you combine diet with exercise. This means that you lose weight quicker and in a healthier way.
1) There are a number of benefits to taking a vitamin supplement.; 2) There are also some disadvantages to joining a gym.; 3) There are a number of benefits to combining diet and exercise.