This video covers the first question in a Trinity Aural test: What is the time signature? And then to explain the dynamics and articulation in a piece of music.
The video talks you through the question then there is a Grade 7 example at 5:55
To practise more examples go back to the Aural mainpage and use the e-music maestro video.
To the Subdominant, Dominant, Relative Minor or Major?
(this video covers Trinity grade 7 Aural tests, Question 3)