Ответ:

1. I've put on some weight so I decided to take up a sport.

2. It's very important to warm up before you start working out.

3. I really want a new laptop so I will go for it.

4. England knocked France out in the last match.

5. Even when it's difficult don't give in and carry on practising.

6. Don't argue with the referee: you will be sent off.

7. It was so hot that two women passed out.

Объяснение:

to take up (a sport) - заняться (спортом)

to warm up - разогреться

to go for - стремиться

to knock out - выбить

to give in - сдаваться

to carry on - продолжать

to send off - отправить, удалить с поля

to pass out - потерять сознание, упасть в обморок