1.was playing,entered

2.studied,came

3.washed,rang

4.was eating,were drinking

5.watched,jumped

6.sat,saw

7.went,shine

8.was going,was having

9.rained,carried

10.walked,began

11.taught,lived,studied

12.was burning,broke

13.was eating,were talking

14.was dropping,was washing up,broke

15.was writting,was ringing,went,heard,was still ringing,was opening,stopped

1. was playing - entered.
2. was studying - came
3. was washing - rang
4. was eating - were drinking
5. was watching - jumped 
6. was sitting - saw
7. was going - shined
8. went - was having
9. rained - was carrying
10. were walking - began 
11. had been teaching - lived studied
12. Was burning - broke 
13. ate - were talking
14. dropped - was washing up - broke
15. was writing - rang - was going - heard - was still ringing - was walking - opened - stopped