for - since

Fill in for or since.

John hasn't done his homework a week.
We haven't been to the cinema October.
Lil has been waiting three o'clock.
Bert has not written a single letter Christmas.
I haven't been to England a long time.
Oh dear, Fred has been sleeping more than ten hours.
They haven't won a single match July.
My mother has not been skiing 1993.
George hasn't seen Elsie a month.
Roberta and Lisa have worked very hard the last five days.