Obama’s success in presidential election proves that the color of one’s skin shouldn’t be a________to success.

To ________ the web page, you press this button, which makes the most recent information appear.

 At the Olympic Games, only the athletes who have reached the agreed standard for their event will be______as competitors.

The population of China is _______ than that of America.

 It’s known to us that Callum _____________ the local accent after talking with the native speakers.