Most of the Europeans refuse to accept GM food ______Americans regard it as the fruit from high tech.

e two hours late that day,which was due to the _________

Please tell Tom not to leave the classroom unless he ______ that all the lights ______

Yesterday they had a quarrel and broke up with each other，but now they have ______.

wn to us is that the 2016Olympic Games will be held in Rio de Janeiro, Brazil.