4. Complete the gaps with the correct prepositions.

Решение:

1. I have been setting aside a bit of money all my summer holidays.
2. Winter has started to set in already, so let's go skiing.
3. We had to set off early in the morning to catch the 6 am boat.
4. A two-hour delay on the way to the ferry was annoying, but we made up the time later.
5. When they realised they had missed the last train, anxiety set in.

Ответ: aside; in; off; in.