An Antelope Ate an Apple?
Adam ate an apple
Zooming zebras zigzagging.
Alliteration
In Iceland insulation is invariably installed in igloos.
Amanda and Anthony are against allowing abortions.
"Can cats catch crafty cockroaches".
Harry has hurt his hand.
Lucy Loved Licking Lollipops.
Cat Cannot Control Cam's Camera(:
Elderly Elephants Eagerly Eat Eggs
"Nick never needs nine new notebooks."
only does not begin with an a there for there can be no sentence with only starting with an a because only starts with a o.