欧美日韩黄网欧美日韩日B片|二区无码视频网站|欧美AAAA小视频|久久99爱视频播放|日本久久成人免费视频|性交黄色毛片特黄色性交毛片|91久久伊人日韩插穴|国产三级A片电影网站|亚州无码成人激情视频|国产又黄又粗又猛又爽的

He used to ____his teaching when he was young.

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

He used to _______ his teaching when he was young.
A. devote to               B. be devoted to  C. devoting to      D. being devoted to

He used to ______ his teaching when he was young.

A. devote to　　　 B. be devoted to

C. devoting to　　　 D. being devoted to

1.      He used to ____his teaching when he was young.

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

He used to ____ his teaching when he was young．

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