1201. It has been two years _____ he left school.
答案:since
1202. --- Would you like to go withus?
--- I'd love to, _______ I have to help my father dosome housework.
答案:but
1203. Air is_____ a liquid _____ a solid.
答案:neither, nor
1204. He will go to see his grandpa _________he gets through with hishomework.
答案:so long as
1205. Go to Uncle Wang for help, ______ your work can be finished ontime.
答案: and
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