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

Living with a host family while studying abroad, in which there may be some other college students, __________ you the chance to learn more about the new culture.

Tom, behave yourself! If you keep on doing that, you'll ____ in serious trouble.

They ________ many difficulties during World War II, but they never lost confidence about life.

Duty is an act or a course of action that people ____ you to take by social customs, law or religion.

— The teacher said we had only three days to finish the work.
— Don't worry. We have already ________ two thirds of it.

He is such a man who is always finding _____ with other people.

They are forbidden _____, for they are still middle school students.

Peter had lost his job, and the family was ________ a very difficult time.

After the meeting was over, the secretary ________ the new worker to the manager’s office.

In fact fuels we burn and plant food we eat ______ their chemical energy in the form of heat.