A person who has slept well will have a clear mind and work efficiently in the daytime ______ people with sleep disorders find it difficult to concentrate during the day.
Really great people always see the best in others; it is the little man who looks for the worst and finds.
No one knows exactly when our ancestors started talking,but new evidence suggests _______might have happened a long time ago.
—Do you think_____ worthwhile to go all the way to Los Angles to buy that computer? —Well ,I’m going to visit some relatives, too.
Though we found _____difficult to avoid economic and financial crisis, we must take measures to reduce its negative impact.
—Does _____please you to give gifts to others? —Sure.