Question

Gary (to help) his grand motherю ( в паст и презент симпл)
Birds (to fly) in the sky. в паст и презент симпл)
She (to feed ) old dog. в паст и презент симпл)
.

Answer 1

Gary helps his grand mother.
Gary helped his grand mother

Birds fly in the sky.
Birds flew in the sky.

She feeds old dog.
She fed old dog.