Parents ____ bring up their children under 16 and educate them properly.
____people in the world are sending information by E-mail every 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.