As teenagers of the 21st century, we should be ready to _____ the challenge of society.
I can guess you___________ your sweater inside out.
. It is only when you nearly lose someone ____________ you fully realize how much you value him.
--I'm going downtown. --Come on.
--Shall Mary come and play computer games? --No,__________ she has finished her homework.
-I'm sorry, I shouldn't have been so rude to you. --You___________ your temper but that's OK.