Many of them turned a deaf ear to his advice, _______ they knew it to be valuable.
Do you think the reason ________ he gave is believable?
This is an illness that can result in total blindness ________ left untreated.
Paper produced every year is ________ the world’s production of vehicles.
--You should have thanked her before you left. ---I meant _______. But when I was leaving I couldn’t find her anywhere.
It is thought that one billion people I the world, _is half the word’s workers, earn their living by farming.