91.
Instead of putting up a united front against on common enemy, the medieval states frittered away their energy in internecine warfare.

92.
Few teachers have been spared the problem of an obstreperous pupil in the class.

93.
The story is too fantastic to be credible.

94.
They feel that we should be fully aware of our own environment.

95.
No one will invite her to a tea party for she is so garrulous.

96.
The aberration in the Indian Economy can be attributed to short-sightedness of its political masters.

97.
Traffic being what it is, it is lamentable that our roads are unable to take the load.

98.
A rupture in the relationship of two brothers is quite apparent.

99.
His visit to foreign countries brought about a sea-change in his outlook and his attitude to people.

100.
Only those who are gullible take every advertisement seriously.