In view of all sorts of rumors and guesses, experts carried out some careful and scientific research and the possibility of a second earthquake in this area.
—What made ber so sad? —______a good chance to go abroad.
You can come here to ask me ________ if you have any questions.
They put_______on the government to lower taxes and give laid-off workers necessary health care.
All Paul’s money had been ________,so he had to make a living by begging.
Though he failed in the experiment again and again, he didn’t______, and at last, he made it.