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.