Since our country has so many good table tennis players, we have to ______ the best ones to take part in the game.   

Now these boys ______our football team.

Please tell me how global warming _____. I am still in the dark. 

As we all know, all living things ________ the sun for their growth.

She can’t get down to work because she was deeply ________ by the news of his death.

It is high time for us to take measures to protect these old traditions and customs before they ___.

After decades of effort, the city is still trying to _____ how to stop smoking in public places.

Columbus _________ the New World in 1492.