He does so little work in the office that for all practical purposes it would make no difference _______ he didn’t come.
-- Can I call you back at two o'clock this afternoon? -- I'm sorry, but by then I ____ to Beijing. How about five?
The little boy was allowed to go to have a swim _____ he finished his homework.
-- Can you keep an eye on my bag? I need to go to the washing closet. -- ________ . It'll be safe with me.
——If you make it in the competition, I’ll buy you a drink. ——Ok. ______!
Many college students are willing to work in Western China after graduation _______, poor and backward as it is, more opportunities of employment are available.