[B]

6. Perhaps they will open the exhibition next month.

7. This time next week they will be flying over the Atlantic Ocean.

8. They say the author will have published his novel by the end of January.

[C]

9. The dish must taste delicious.

10. Can she translate all the texts herself?

11. She might be playing the piano in her room. I can hear the music.

[D]

12. My friend asked me if I have ever tried GM foods.

13. His elder sister told him not to take her things without asking.

14. Sam said to Ann that he's leaving tomorrow.

15. He asked his new friend what sports he does.