Complete the sentences with a verb, using the appropriate form.

1. Dan is always on about how rich he is.
2. You can’t change what happened, so don’t on it.
3. We’d better on if we’re going to get to the hostel before dark.
4. I’m going to on after work to finish the report.
5. Taekwondo has really on – all my friends are learning it.
6. Hugo’s family tried their best to him on to complete his novel.