单句填空（每题1分，共10分） 1. After the exam, my teacher told me that failure ______ (be) the mother of success. 2. There is no such thing ____ a free lunch. 3. There is a __________ (determine) look on his face. 4. ______she made up her mind, nothing can change it. 5. We_____________ (leave) for Japan tomorrow morning. 6. He asked me whether the big flood ___________ (destroy) the area. 7. Years passed before the war was finally at _____end. 8. He tried to work, but it was ________ (use). 9. It was the curtain _______ was full of dust. 10. Geography also plays a part _____ making dialects.