根据句意和所给首字母填空
【小题1】I v_____ took part in a charity program and went to the rural area in Guangxi to train the English teachers there.
【小题2】The material’s inventors say it has a number of possible uses and someday could provide a more environmentally friendly a_____ to plastic.
【小题3】From this story, I am firmly convinced of the significance of honesty, which will c_____ to building a warm and harmonious society. 
【小题4】Schools should e_____ a minimum of one-hour exercise for each student every day to improve their fitness.
【小题5】It has recently been announced that all the music stores nationwide are p_____ from selling pirated（盗版的）CDs.
【小题6】Large numbers of fans complained that all the live concert failed to live up to their e_____.
【小题7】On this tour we will experience four different m_____ cultures: the Inuit, the Aborigines, the Maoris and Native American Indians.
【小题8】She’s an actress whose inner life has remained m_____, despite the many interviews she has given.
【小题9】Failures hurt grown-ups and children a_____, but it can make a difference to your life once you learn to use it.
【小题10】The teachers, students and alumni had a grand meeting in c_____ of the 120 anniversary of our school.
【小题11】The m_____ behind the decision is the desire to improve our service to our customers.
【小题12】Last summer, an unexpected storm, with the strong winds a_____ by heavy rain, struck the area.
【小题13】You can’t p_____ everything. Often things don’t work out as you expect.
【小题14】Now a majority of high school students in China fail to get a_____ sleep during the night so they find it difficult to stay energetic at school.
【小题15】The one-day event has been held annually on Nov.11, celebrated with a wide v_____ of deals and discounts from Tmall.
【小题16】The official said the safety of up to 400 children in the refugee camp must be g_____.
【小题17】We have several stand-up c_____ in our club, who always bring us a lot of laughter and joy.
【小题18】---Hello, welcome to the City Transport Lost Property. Can you give us a d_____ of your lost stuff?
【小题19】People in East Africa are dying from a_____, because food shortage is still a big problem there.
【小题20】The car driven by Sean Connery in some Bond films will go under the hammer this October and is expected to f_____ over $5 million.