Rooms with _______ appear clean and bright.
The room is in a terrible mess; it ________have been cleaned.
The British are not so familiar with different cultures and other ways of doing things, ________ is often the case in other countries.
So far this year we _______ a fall in house prices by between 5 and 10 percent.
I thought we’d be late for the concert, _______ we ended up getting there ahead of time.
I wish I could offer you some cake but there’s _______ left.