John slept late quite often and his frequent lateness for work led to        .

 –Come on, please give me some ideas about the project.--- Sorry. With so much work _________my mind, I almost break down.

Not far from the school there was a garden,         owner seated in it playing chess with his little grandson every afternoon．

All flights _____because of the snowstorm，we decided to take the train instead.

With efforts _______ conservation, we may believe that people enjoy a healthy life without the environment around them ________.