从A、B、C、D四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。
21．—The combination of Chinese culture and modern technologies made the Beijing Olympic Games a special event.
—________________.
A．Good idea B．At your pleasure C．It’s my pleasure D．I couldn’t agree more.
22．Although the country has had political independence for over a century, __________ it needs the support of its neighbours.
A．naturally B．economically C．especially D．gradually
