81.
He is separated . . . . . . . . his family.

82.
I agree . . . . . . . . you in this critical matter.

83.
I was amazed . . . . . . . . his misbehavior.

84.
She went to the party . . . . . . . . Sherlock Holmes, complete with a pipe and a cane.

85.
When Britain adopted the decimal system for its money, it changed . . . . . . . . relatively smoothly.

86.
The students walk five kilometers to school, so they need to get up very early . . . . . . . . the morning.

87.
He is hopeful . . . . . . . . his success in the I.A.S. examination.

88.
He did not avail himself . . . . . . . . the opportunity.

89.
I felt the pain surge . . . . . . . . my left arm and head towards my chest. I was having a heart attack.

90.
My house is situated . . . . . . . . the two ponds.