1.______ to the cause of the education, the teacher had no time to have a rest.
A. Devoted B. Devoting C. To D. Having devoted
变式1. ______himself to the cause of the education, the teacher had no time to have a rest.
A. Devoted B. Devoting C. To D. Having devoted
变式2.First of all, I respected his ____ to teaching.
A. attention B. introduction C. relation D. devotion
