41.
They are cautiously optimistic about the effects of the new medicine.

42.
On scrutiny the police officer found out that the documents provided by the landlord were totally fabricated.

43.
He is urbane in his manners.

44.
His endeavours proved fruitful.

45.
The prisoner made an abortive attempt to escape from the jail.

46.
Some people are extremely fastidious in their choice of dress.

47.
His views on children and their upbringing are indeed outlandish.

48.
Tired and weary he returned home late that night.

49.
It was a fabulous idea.

50.
Most of the staff is restive under the new manager's rule.