The machine is so old ___ it can’t be used any more ___ some

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
jyf_111111 1年前 已收到1个回答 举报

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B

so…that…如此…以致是常用句型; unless引导条件状语从句.

1年前

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