Misc: When using a telephone, you must wait for a ____ tone before starting your call?

Questions

What is the principal female singer in an opera called?

Apart from a toothbrush, what else did the audience have to take in Dont forget your Toothbrush?

How many players in a hurling team?

Who was the incurable optimist in David Copperfield?

In which field would you encounter the Pons Asinorum?