完型填空。阅读下面短文，掌握其大意，然后从以下题所给的A、B、C、D四个选项中，选出最佳选项。
Whenever a disaster takes place，thousands of people start to contact various organizations and post to online groups in an effort to try to volunteer at 1.________ disaster site.Some2.________ jump into their cars and drive to the area.
