1 Does timber-framed construction offer a lot of advantages?
2 Are there over 400 stone quarries in the UK?
3 Are stone and timber natural materials?
4 Is he asking me about my exams?
5 did the representatives leave late at night?
6 did we have entance exams last smmer?
1 Do smart homes provide energy efficiency savings?
Who provides energy efficiency savings?
Smart homes provide energy efficiency savings, don't they?
Do smart homes or smart people provide energy efficiency savings?
What do smart homes provide?
это не все возможные, а некоторые.
2 what are they looking for?
They are looking for local natural materials or for fuel?
are they lookong for local natural materials?
who is looking for lical natural materials?
They are looking for local natural materials, aren't they?
3 did the experiment begin an hour ago?
what began an hour ago?
Did the experiment begin an hour or a day ago?
the experiment began an hour ago, didn't it?