According to the established rules of phonetics and phonology of the English lan...

Questão de Inglês da banca CESPE CEBRASPE aplicada no concurso SGA DF (2004). Confira a resolução completa abaixo:

According to the established rules of phonetics and phonology of the English language, judge the items below.

The sound of the letter a in ago and in about is unstressed and it is called a schwa.