Как правильно?
___ chocolate is that? (who's, who, whose)
We live in __ old flat in Edinburgh. (the,a,an)
What are your two ___ names? ( sisters', sister's, sisters)
My father teaches at a ___ dchool in Prague. (boy's, boys', boys)
My father teaches at a ___ school in Prague. (boy's, boys', boys)
1 whose
2 an
3 sisters'
4 boys'