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Only when the war was over ________ return home.


  1. A.
    he was able to
  2. B.
    was he able to
  3. C.
    could he be able to
  4. D.
    would he be able
B
解析:
題意是“只有到戰(zhàn)爭(zhēng)結(jié)束,他才能回國(guó)”。主要考查only+連詞(when/before/after/while)引導(dǎo)的狀語(yǔ)從句的用法,倒裝的是主句。C選項(xiàng)雖然是倒裝,但用了could一般不再用be able to,D選項(xiàng)would he be able缺少to。根據(jù)句子結(jié)構(gòu)故選B項(xiàng)。
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