1. The p_______ of the words "sea" and "see" is the same.
2. After a hard-working day, the man was so tired and s______ that he fell asleep very soon.
3. Martin used to be a problem student, because he c______ a lot of trouble.
4. Don't w________anyghing, especially time.
5. He isn't old enough to get a driver's l_______.
6. Don't tell others. It's a _______ (秘密) between you and me.
7. Henry's grandfather is ________ (知识渊博). He often helps Henry with his lessons.
8. The books are all on those________. (架子)
9. He is busy doing ________ (医疗的) research in the hospital.
10. Work hard and never give up, you're sure to _______ (成功) one day.