用适当的关系词填空。 1. Everything ______ I know will be taught to the students. 2. This is the best film ______ I have ever seen. 3. The picture ______ has a house and flowers is the one I like best. 4. The house ______ stands on the top of the hill was built last month. 5. The medicine ______ he bought is good for your health. 6. He is the only person ______ saw the accide nt yesterday. 7. The present ______ he gave her yesterday evening is still unopened. 8. The newspaper ______ you are reading is two days old. 9. The student ______ the teachers are talking about has won the first prize in the English contest. 10. I know the girl ______ the teacher praised yesterday.