It was never clear___the man hadn’t reported the accident sooner
These are questions ______ by history.
___that she’s by law old enough to get married, I don’t see how you can stop her.
He bought some books, ______ were expensive.
The city was difficult ________, _________ was defended by an army of 6,000 men.
---- Could you do me a favour and take the box up to the six floor? ---- ______. No problem at all.