present perfect: for since

Nobody has come to see us ___________ we bought this small house.

She has been a doctor ___________ 1998.

Nobody has seen her ___________ then.

They have all been ill ___________ last week.

Peter went to the library. He has studied there ___________ a long time.

I’ve worked with you ___________ nine years.

She has worked in that office ___________ a month.

He hasn’t eaten anything ___________ yesterday.

I haven’t talked to her ___________ my birthday.

I’ve been very patient with you ___________ several years.