PRESENT PERFECT: FOR / SINCE

I haven't seen Mark ______ a long time.

• FOR

• SINCE

Delia has sold these products ______ 2015.

• FOR

• SINCE

She has been my friend ______ we were kids.

• FOR

• SINCE

I have been here ______ May.

• FOR

• SINCE

They have been married ______ ten years.

• FOR

• SINCE

She has taught history ______ almost twenty years.

• FOR

• SINCE

My dog has been with me ______ 5 years.

• FOR

• SINCE

Erick has driven that old car ______ he bought it to my brother.

• FOR

• SINCE

Patrick has been the main chef ______ 3 months.

• FOR

• SINCE

I have had this haircut ______ I was 20.

• FOR

• SINCE