这个城市的对外开放政策吸引了大量国际游客。

The city's ___opening-up policy has attracted many international tourists.

他在心理咨询时逐渐敞开心扉，分享童年的创伤经历。

During therapy, he slowly began ___opening up about his childhood trauma.

经济开放政策促进了国际贸易的增长。

The ___opening-up policy has boosted the growth of international trade.