15. It’s only by travelling or living in a country and getting to know its inhabitants and their language _________ one can find out _________ a country and its people are like.
—_____ that he picked up his uncle at the airport? —It was at 6:00 in the afternoon _____ he got off work.
Fans from miles around crowded into the stadium for the concert of Jay Chou on September 4th, 2012, _____ are popular with teenagers.
—Why does Mary look so worried today? —I’m not sure, but she _____ a small accident driving here.
Tom asked the candy makers if they could make the chocolate easier ____ into small pieces.
The girl in the photo was smiling sweetly, _____.