From the dates__________on the gold coin, we decided that it was made five hundred years ago.
David caught a bad cold last Tuesday. Luckily, the cold didn't ______ his examination in physics.
-What are you worried about? -Tom didn't respond ______ any of my e-mails. Something must have happened to him.
It is almost ______ that every organization has too many meetings, most of which are poorly prepared.
-Can I smoke here? -Sorry. We don't allow ______ here.
Once harm is ______ to the eco-system, all species will ______ , including man himself .