1. Stress should be put on the ________ (预防) of diseases.
2. She ________ (结束) her talk with a funny story.
3. This ________ (假的) leather feels like the real thing．
4. His annual income was ________ (估算) at ten thousand dollars.
5. I never ________ (怀疑)for a minute that you were married.
6. We give preference to ________ (申请人)with some experience.
