Làm giúp mình bài này với

6. Dr John, who hasn't done his job well recently, lost his position.

7. They are repairing the house which was bought in July.

8. The cooker which we bought at Nguyen Kim supermarket yester day is a very hight-qualified cooker.

9. The directer, who I have forgotten, is very famous.

10. The city where we spend our vacation is nice.

#No_copy