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

I feel it hard to keep up with my classmates. But whenever I want to _______, my teacher always encourages me to work harder.

I feel it hard to keep up with my classmates. But whenever I want to _______, my teacher always encourages me to work harder.

A．give in            B．give back          C．give out           D．give up

I feel it hard to keep up with my classmates in study and sometimes I lose heart. But whenever I want to ________ , my teacher always encourages me to work harder.