68. The first sign of the disease is a feeling of faintness. (ONSET)

67. His arrival was completely unexpected. (TOOK)

66. He can speak French well enough to go to the conference.
(FLUENT)

65. He can hardly read at all. (VIRTUALLY)
 

65. He can hardly read at all. (VIRTUALLY)
 

65. He can hardly read at all. (VIRTUALLY)
 

64. He speaks more persuasively than his brother.
→He is 

63. The only way you can become a good athlete is to train hard
every day.
→Only by

62. Galileo is considered to be the father of modern astronomy.
→Galileo 

61. The only reason the party was a success was that a famous film
star attended.
→Had