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Mr. Li devoted all his life         English. Now he retired.
A．to teachB．to teachingC．to be taughtD．to have being taught
B
本題考查動(dòng)詞devote的用法。devote …to 致力于，獻(xiàn)身于，短語(yǔ)中的to是介詞。本題句意：李先生一生都致力于教英語(yǔ)上，現(xiàn)在他退休了。
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