Many of us love traveling, but lack of financial _________ often holds us back from seeing the world.
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.
Whether ways will be found to stop pollution or not is just___________ worries the public.