Each nurse _________ two evenings _________ studying medical literature．

1. A.
   devoting; to
2. B.
   devote; at
3. C.
   devotes; to
4. D.
   devotes; for

________ to our study is the best way ________ high grades

1. A.
   Devote ourselves; to achieve
2. B.
   Devoting us; of achieving
3. C.
   Devoting ourselves; to achieve
4. D.
   Devoted ourselves; of achieving

______ to his work resulted in his great success.

       A. Devoting        B. Being devoted       C. Devoted  D. To devote

He used to ____his teaching when he was young.

A.devote to    B.be devoted to   C.devoting to   D.being devoted to

________ to our study is the best way ________ high grades.

A. Devote ourselves; to achieve                  B. Devoting us; of achieving

C. Devoting ourselves; to achieve               D. Devoted ourselves; of achieving