I had to tell some of them what we wanted to do next, because ________.
Was it through Mary , ____ was working at a high school , _____ you get to know Tom ?
Mary couldn’t make herself _______ attention to because her classmates made so much noise.
He arrived here at noon, in the day, and he went out and came back in the day.
The time he has devoted in the past years _______ the disable is now considered ________ of great value.
With the development of science and technology, people’s life _______ in the past few years.