10. What _______________ (you/do) at this time yesterday? Oh, I ______________ (prepare) the dinner. 11. I _______________ (fall) asleep while I _______________ (watch) television. 12. At 12:45 yesterday, Mr Alright _______________ (see) a client in his office. 13. While Tom (read) ____________ , Amely (watch) ______________a documentary on TV. 14. Marvin (come) __________home, (switch) ____________ on the computer and (check) ____________ his emails. 15. The thief (sneak) ___________into the house, (steal) ___________ the jewel and (leave) __________ without a trace. 16. Nobody (listen) _____________ while the teacher (explain) ________________ the tenses. 17. While we (do) ____________ a sight-seeing tour, our friends (lie) _________on the beach. 18. He (wake) ____________up and (look) ______________at his watc