21.   Defence could muster cogent arguments to maintain an unusually high level of expenditure.

22.   Dolphins show a high level of intelligence.

23.   Each trainee is expected to show a high level of expertise before they graduate.

24.   Fields adjacent to the nuclear facility were found to have high levels of radioactivity.

25.   High level of comfort in pleasant surroundings.

26.   High levels of car use mean our streets are more congested than ever.