13. When I got back to the shop , my bag _________________ (take) away by someone else.

14. When I arrived at the cinema, the film _________________ (be )on for ten minutes.

15. ---What's that terrible noise?

---The neighbors ______ (prepare) for a party.

16. The mayor of Beijing says that all construction work for the Beijing Olympics _________________ ( complete) by 2006.

17. The teacher, with 6 girls and 8 boys of her class, ______ (visit) a museum when the earthquake struck.

18. ---Mr. Johnson didn't turn up at the meeting yesterday morning, did he?

--- No. We __________ (wait) till twelve o'clock. A whole morning was wasted.

19. ---Why haven't you asked her to come here?

---She _______ (do) an important experiment when I found her and she ________ (not, finish) it.

Keys:

Ⅰ. 1-5 CBCBB 6-10 BBAAC 11-15. DDBCA

Ⅱ. 1. had learnt 2. had got 3. had read 4. had seen 5. had taught 6. had completed 7. had gone 8. had gone 9. had been cleaned, got 10. Had finished 11. had left 12. had been finished 13. had been taken 14. had been on 15. are preparing 16. will have been completed 17. was visiting 18. were waiting 19. was doing, hasn't finished