1. They have done the work.
2. She has washed the dog
3. He has written a letter.
1. He has not done the work yet.
2. She has not worn a red costum.
3. I has not eaten.
1. Have you done the work yet?
2. Has you drawn a picture yet?
3. Have they
built a new house yet?
Использовала yet,т.к. это частичка обозначает УЖЕ и употребляется в вопросительных и отрицательных предложениях.
Надеюсь, помогла. Удачи.