Question

Mr. Li devoted all his life         English. Now he retired.

1. A.
   to teach
2. B.
   to teaching
3. C.
   to be taught
4. D.
   to have being taught

Answer 1

B
本题考查动词devote的用法。devote …to 致力于，献身于，短语中的to是介词。本题句意：李先生一生都致力于教英语上，现在他退休了。