The employees were tired of working ______ hours and some of them even gave up their work.

There was an _________ look on his face when he knew the bad grade of his son.

–We should use      methods to deal with different incidents. You know, anything can happen in that situation.–I got it. Thank you for reminding me.

Internet is a great tool if we know how to use it ,but it shouldn’t be a replacement for ______life.

She felt rather _______that she should drive the car at such a___________ speed.