根据下面材料，在空白处填入1个适当的单词或括号内所给单词的正确形式。
The oil-paper umbrella has a history of over 1,000 years in China. There are different （1） （story）about the invention of the umbrella in China. The most popular one has something to do with Lu Ban. It’s said that once he and his wife visited the West Lake. It started raining suddenly. His wife said, “Let’s have （2） competition. Before sunrise tomorrow, the one who comes up （3） a good way to visit the West Lake even on rainy days will be the winner.” Lu Ban （4） （think）it was easy. He collected some tools and materials. Then he spent the whole night （5） （build）pavilions（亭子）around the lake. He was quite proud of his work.
The next morning, （6） Lu Ban talked about his achievements and felt proud, his wife held something unusual in her hand. It could be opened into a round shape. Lu Ban was （7） （surprise）. He found that the object, made of silk and bamboo, could be opened and closed （8） （easy）. It was light, beautiful and easy to carry. Lu Ban said, “You win. Your invention can protect us from rain better.” So the umbrella （9） （invent）.
Later, people began to use paper, which was （10） （cheap）than silk. To make the umbrella water-proof, people brushed a kind of oil on the surface. So the oil-paper umbrella appeared.
We should treat everyone with kindness and （warm）， spreading love and joy everywhere we go．
Learning is a lifelong j because every day brings something new．
So far，no （科学的） studies have shown that shark fins are good for health．
Doing outdoor （activity） can help students improve their abilities and skills．
For many people around the world，the third Sunday in June is a day to respect their fathers．It is Father's Day and（1） （celebrate） Father's important role in the family．
Father is just（2） important to a child as Mother is． For daughters， Father is the first man they admire， while for sons， Father is an idol （偶像） and the（3） （strong） man in their life．
The idea of celebrating Father's Day was（4） （give） by Sonora Smart Dodd of Washington in 1909． She wanted a special day to honor （纪念） her father William Smart； his wife died（5） she was giving birth to their sixth child． Mr． Smart was left（6）_____ （raise） the newborn and his other five children only by himself． After Sonora became an adult， she understood the strength and selflessness （无私） her father had shown in raising his children as a single parent． The first Father's Day was celebrated（7） June 19， 1910 in Washington． And it was in 1966 that the USA President Lyndon Johnson officially made the third Sunday of June Father's Day， In 1972， the USA President Richard Nixon made（8）_____ a national holiday．
Over the years， the idea of celebrating Father's Day on the third Sunday of June（9）_____（spread） across the world． Celebrating the day gives people a chance to express their love and thanks to their fathers． Celebrating the day also makes fathers feel that their contributions arc acknowledged （认可） by their children and（10） （social）．