________ you met the foreigner from Canada?
When we start gazing into the night sky with a telescope, soon we’ll be astonished by the realization _______ we and our world are part of this giant system.
Karaoke, which was invented by the Japanese, ______ both wonders and problems.
Obama didn’t explain ______ any larger principles have guided him through the historic convulsions of the 2011 Arab Spring.
I feel it a great honor ______ to give a speech here.
This is the first time that your parents have been abroad, ______?