Because prices of food and clothing and almost everything else in that country have steadily gone up, the buying of the dollar has gone down.
When ____ to compare the education system of China and Britain, the professor gave no answer.
Why not get some work experience first ______ go straight on to university?
What if we meet with a situation _______ none of us are able to deal with?
His lack of professional knowledge _______for the failure of the experiment.
Tom was about to close the window his attention was caught by a bird.