用所给单词的正确形式填空 regardless of, at most, cut it up, fed up with, look ahead, date back,keep warm,keep...out of,care about,with relief 1. We tried to carry our plans through ____ great difficulties. 2. The farmer first cut down the tree and then he ____ 3. Cotton is used to ____ 4.The Great Wall was built to _____ the enemy ____ the country. 5. We can stay for two days _____ 6. We are ____ waiting for him by standing here. 7. Planning officials are now____ to the needs of the population in the year 2016. 8. The history of this custom can ____  to thousands of years ago. 9.I don't____what other people think about me. 10. We all sighed____when the plane finally touched down safely .