Read these sentences and rewrite if-sentences into the full sentences with "unless”. don’t forget about full stops. study the example. example 0. if you do not work hard, you will not pass. answer 0. unless you work hard, you will not pass. 1. if you do not take vitamins, you will feel bad. 2. if they do not hurry, they will be late. 3. if you do not spend much time in front of your computer, you will be healthy.

1. In the simplest (превосходная) account the costs are divided into "variable" and "fixed"
2. Double-entry is the most accurate (превосходная) method of book-keeping
3. Before the last (предельная) war less than half (сравнительная) the beef consumed in the UK was produced at home
1. В простейшем отчёте расходы делятся на "переменные" и "постоянные".
2. Двойная запись является наиболее точным методом бухгалтерского учета.
3. Перед последней войны менее половины говядины, потребляемой в  Великобритании, производилось внутри страны.

Nowadays there are a lot of different devices preventing teens to read. Children spend much time playing computer games or surfing the internet instead of reading books. As for me I like reading books about adventures or detective stories. In my free time I usually go for a walk with my friends. I try to be more in the open air and to do sport. In winter I ski or skate. In summer I often swim or jug in the park. In cold days I go to gym. And of cause like all teens I spend some time to surf the internet.