1. Is known . has never played
2. was shown . wasn`t told
3. is not being played
4. were working
5.were introducing . were dancind\singing
6. told. will be examined
7. have discussed
8. was raining. were broken
9.was repairing
10. is being taught
11. was given . is called . calls
12. introduced . won`t recognize
13 . haven`t seen