6. leaves ; took　 7.have been doing　 8.has hosted　 9. had laid

1. is to blame　 2. will be waiting　 3.will go　 4.had set up　 5.have taken place

11. His wife ____________ (hope) to catch the last train but she was too late.

10.The boy said that the UFO __________ (travel) north to south when he saw it.

9. Before I came there, he _____________ (lay) the table for us.

8. He __________ (host) the show eight times and people all like him.

7. I _________________ ( do) my homework all the morning. We always have endless homework on Sunday.

6. -Can you tell me when the flight 　___ (leave)for Shanghai, sir?　 -Of course, I can. It ___ (take) off half an hour ago.

5. Up to now, great changes ____________ (take) place in my hometown.

4. By the end of last year, he _________ (set) up 5 companies across the world.