Sentence examples for challenges have been posted from inspiring English sources

Around 900 challenges have been posted so far by some 150 firms including big multinationals such as Procter & Gamble and Dow Chemicals.

On Facebook alone, more than 2.4 million ice bucket challenge videos have been posted, the company said Monday afternoon.

A Web site devoted to the challenge claims that more than 40,000 videos have been posted on YouTube, and it describes the goal of the challenge as trying to swallow a spoonful of cinnamon in 60 seconds without drinking water.

Warning signs have been posted.

Crossing guards have been posted.

— Fliers have been posted on storefronts.

She has been posting images of her poolside over the last few days, deeming the social engineering challenge #Poolswiping.  .

Challenges have been made to the credibility of photos posted online by the campaigns of both Braley and Ernst, a Republican state senator.

The challenges have been considerable.

"The challenges have been big.

Targeting of the pulse pressure variation in mechanically ventilated patients to a value of less than 10% with fluid challenges has been demonstrated to improve post-operative outcome and reduce length of hospital stay [ 51].