Only when I graduated from the high school ______ how much time I had wasted.

Along with the letter was his promise he would visit me this coming Christmas.

______ delicious the beef is! Thank you for invitingme to dinner. —I’m glad you like it.

a very hard-working student. —________. As far as I know, he often burns themidnight oil.

Did you know any Chinese before you arrived in Beijing?— Never ________ it, actually.