A British man who ____ to play practical jokes ____ his own humorous art work in four major New York museums over the last two weeks.
Beijing government puts more than 700 million yuan to increase its green space this year; ____________ doubles the money provided last year.
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.