October 1 of 2009 is a special day, _________, I guess, which will be remembered by the Chinese for a long time.
__________ you understand the rule, you will have no further difficulty.
—He isn’t particular about his food. —Yes, he eats_____________ anything.
Flight BA 123 to Vienna is now boarding at_______.
He didn’t seem to mind_____________ TV while he was trying to study
I don't skate now, but I___________ when I was a kid.