Please open the window, _____?
32. Staying in a different country, just watch others to see _____ they act to decide what the best to say is.
31. The cheering went on for quite some time _____ it died down and people took their seats again.
30. —I _________ his telephone number. —I have his number, but I _________ to bring my phone book.”
29. He was busy preparing a speech , only _______ once in a while to rise from the table for a tea .
28. Mr. Duncan raised an unnecessary question _______ he then failed to find an answer.