根据括号内提示填空 1) 【 2016全国卷2】 Recent studies show that we are far more productive at work if we take short breaks 67 __ (regular). 2) 【 2016全国卷3】 Food in small pieces could be eaten easily with twigs which 46 (gradual) turned into chopsticks. 3) 【 2015全国卷1】 Abercrombie & Kent, a travel company in Hong Kong, says it _ 69 _ (regular) arranges quick getaways here for people living in Shanghai and Hong Kong. 4) 【 2015全国卷2】 Walls made of adobe take in the heat from the sun on hot days and give out that heat 65 ( slow) during cool nights, thus warming the house. 5) 【 2014全国卷1】 The river was so polluted that it _ _62 __ (actual)caught fire and burne 6) 【 2014全国卷2】 Five others on the bus began talking about what the boy had done and the crowd of strangers 50 _ (sudden) became friendly to one another. 7) 【 2014广东卷】 When we were wondering what to do, the manager came out. She was 22__ (surprise) helpful. 8) 【 2014辽宁卷】 Bend your knees slightly and reach out your arms like tree branches, naturally and 62 (soft). 9) 【 2013广东卷】 But such a small thing couldn’t 23 ___ (possible) destroy a village. 10) 【 2011广东卷】 He must be 20 __ (mental) disabled.