4.Can you imagine this shy _______ at the concert?
—I missed the first part of the film. It was really a pity. —You __________ home half an hour earlier.
His father told me that he __________ for the United States three days __________.
He made a mistake, but he corrected the situation __________ it got worse.
Iraq has __________ too many wars since 1990, making his people __________ a lot.
Many websites have been _______ to help people study foreign languages.