eat
Equestrian
A physical activity is aerobics.
What phyiscal activity starts with the letter "x"
No river in Hungary starts with the letter E.
An employment letter starts with the letter E. Perhaps an empathy letter to someone who is ill or bereaved.
Eggnog is a drink that starts with the letter E.
Dive
Netball
One would be "exercise."
'envelope' because it starts with 'e' and ends with 'e' and only has 1 letter in it.
Mathematics
Zumba