71.
After the discovery of the small pox vaccine, there is no cases of the disease in India.

72.
The expert was very interesting in this candidate.

73.
To learn a language well,one must have patience and readiness to work hard.

74.
He kept us all in suspension regarding his future plans.

75.
Mahatma Gandhi was by far a great man of India.

76.
Vishal, who studies medicine at present, hopes to go abroad after graduation.

77.
Robert listened to the phone ring again and again.

79.
My neighbours are extremely noisy but even more are they quarrelsome.

80.
The principal was angry on seeing a wooden broken chair lying in the corridor.