'Throughout' means 'in every part of'. Hence it makes the sentence meaningful.
275.
He was in prison for . . . . . . . . three years.
(A) over
(B) about
(C) of
(D) in
Solution:
Here 'over' means longer than the said period i.e. three years. Hence it makes the sentence meaningful.
276.
The reward was not commensurate . . . . . . . . the work done by us.
(A) with
(B) for
(C) on
(D) order
Solution:
'Commensurate with' means 'suitable in amount or quality compared to something else'. Hence it makes the sentence meaningful.
277.
You can see the doctor . . . . . . . . 8 am and 12 noon.
(A) at
(B) in
(C) between
(D) on
Solution:
'Between' means 'in the period separating two points in time'. Here two points in time are 8 am and 12 noon. Hence 'between' makes the sentence meaningful.
278.
I was astonished . . . . . . . . the sad news.
(A) to
(B) with
(C) at
(D) in
Solution:
'At' indicates specificity of something. Here, a specific 'sad news' created astonishment.
279.
Could I borrow your book . . . . . . . . a week next month?
(A) after
(B) around
(C) for
(D) during
Solution:
'For' can be used to indicate a duration, limit or an ending. Hence it makes the sentence meaningful.
280.
The clock will be repaired . . . . . . . . a week.
(A) on
(B) within
(C) in
(D) at
Solution:
'Within' means 'before the end of'. Hence it makes the sentence meaningful.