题目内容
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
B
解析:
so…that…如此…以致是常用句型; unless引导条件状语从句.
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题目内容
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
B
so…that…如此…以致是常用句型; unless引导条件状语从句.
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