Glad to see you back How long _______ in Russia

Unless ________ to speak,you should remain silent at the conference [ ]

I am afraid there’s __________with the computer. Canyou come and have a look?

________ I smoke here—No. You are not allowed tosmoke in public places.

When was the 29th Olympic Games held— ________ 8:00 of August 8th ,2008, Beijing.