John failed in the exam, ________he had prepared a lot for it before.
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.
We have moved into a four-room flat so far. Our room is between _____.