From the dates________on the gold coin,it is confirmed that it was made five hundred years ago.
Mary is really good at taking notes in class. She can almost every word her teacher says.
When ________ questions in class, one should answer them as clearly as possible.
It was not until I came here ____ I realized this place was famous, for not only its beauty but also its weather.
—How much shall I pay for the phone call? —You________. This is free of charge.
Food supplies in the flood-stricken area ______. We must act immediately before there’s nothing left.