阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。

Wang Hongmei, a master in the Forbidden City, specializes in restoring damaged paintings. “I found conservation of paintings extremely【小题1】(challenge) at the beginning when I often had to stand for hours all day long due to the nature of the work.” Wang【小题2】(recall). “Commitment and time【小题3】(gradual) calmed down my heart.”

It takes a seasoned conservationist like Wang a whole year【小题4】(restore) just three to four paintings. Sometimes the work could take even【小题5】(long). A scenic painting over 170 square meters in size,【小题6】was created by Emperor Qianlong for his retirement, was worn. Wang and her colleagues spent five years restoring the painting to its previous brilliance.

“These treasures are not simply individual items,【小题7】heritages (遗产) of the craft and spirit passed on by the artists, collectors and conservationists of the past,” Qu Feng, one of Wang’s 【小题8】(workmate), said. “Strengthened conservation efforts symbolize increasing national power and【小题9】(proud). If we can protect our cultural heritage to the best of our abilities, our nation will come to believe【小题10】itself more firmly.”

Due to the efforts by the masters in the Forbidden City, the public now can have a further understanding of cultural heritage protection.