.---Could I use your telephone? --- Yes, of course you  ________.

Thank you _____ visiting our company. We are looking forward to _____ you again.

He imagines that people don’t like him, _____ they do.

Mark was a student at this university from 1999 to 2003, ____ ,  he studied very hard and was made Chairman of the Students' Union. 

.What a pity! I missed meeting my boss at the airport because my car was ______ in the traffic jam.