They have lived in London for 3 years.

They has lived in London for 3 years.

They have living in London for 3 years.

They have lived in London for 4 years.

She has talking to her grandchildren on the phone and through e-mails

She have talked to her grandchildren on the phone and through e-mails

She has talked to her grandchildren on the phone and through e-mails

She has talked to his grandchildren on the phone and through e-mails

So far, she have knitted two large blankets for her granddaughters.

So far, she has knitted two large blankets for her granddaughters.

So far, she has knits two large blankets for her granddaughters.

So far, she has knitted three large blankets for her granddaughters.

They not have lived in London for 3 years

They have lived not in London for 3 years

They haven't living in London for 3 years

They have not lived in London for 3 years

Has she also knitted a scarf for each grandchild?

Have she also knitted a scarf for each grandchild?

She has also knitted a scarf for each grandchild, hasn't she?

What has she also knitted for each grandchild?