Teachers tell me about their students' constant complaints, quick boredom, and how quickly they disengage.

But in reality there were constant complaints.

There are constant complaints in the media about the worsening traffic situation.

This procedure came about because of constant complaints of personal mail being previously opened before arrival.

The use of wood pellets for overnight fuel, as well as diesel switchers are a result of constant complaints from local citizens regarding the smoke from the coal-fired engines.