The machine is so old ___ it can’t be used any more ___ some of its parts are ch
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The machine is so old ___ it can’t be used any more ___ some of its parts are changed.A.as, unless | B.that, unless | C.that ,if | D.whether, or |
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答案
B |
解析
so…that…如此…以致是常用句型; unless引导条件状语从句. |
举一反三
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