The field research will take Jone and Paul about five months; it will be a long time we meet them again. A. after B before C since D when 查看更多

 

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The field research will take Jone and Paul about five months; it will be a long time ____ we meet them again.
[     ]
A. after
B. before
C. since
D. when

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 The field research will take Jone and Paul about five months; it will be a long time ____we meet them again.

A. after  B  before  C   since  D  when

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