1)
have they built the cottage yet?
no they haven't. They're are still building it.
how long have they been building it?
they have been building it since they moved here from England.
when did they arrive?
They arrived two years ago
2)
have the things been packed yet?
no they haven't. They are still being packed.
how long have they been packed?
they have been packed since early morning. they were being packed when I came. how long had they been packed before you came? I was told they had been packed for two hours when I came.
