91.
The reward was not commensurate . . . . . . . . the work done by us.

92.
There is no boy . . . . . . . . the class.

93.
The cat is hiding . . . . . . . . the bed.

94.
Ram must be back home . . . . . . . . 10 o'clock.

95.
Mary is not used . . . . . . . . staying in a big city.

96.
. . . . . . . . the end of a course, students usually have a party.

97.
Mother has been ill . . . . . . . . last month.

99.
He took the book . . . . . . . . the shelf and put it . . . . . . . . his bag.

100.
Traveling . . . . . . . . air is faster than traveling . . . . . . . . sea.