112.John, youplay with the knife. Youhurt yourself.

13.In the dark street, there wasn＇t a personshe could turn for help.

12.Volunteer teaching in the west is the most challenging jobI have ever had.

11.The person came here yesterday is a musician.

10.Jack failed the exam, we had expected.

9.I lost my key in the cinema I watched this film.

8.What surprised me was not what he said buthe said it.

7.There is a timeI wonder why I do this job.

6.There are many people watching the movie Saturday Fiction, are young people.

5.My father bought a second-hand car recently, was very reasonable.

4.The boy kept crying, annoyed his mother intensely.