59. If it _____ Professor Johnson's recommendation I wouldn't have been admitted to the graduate school.
A) were not for
B) had not been for
C) were not
D) had not been
60. _____ matters little.
A) He will come or not
B) If or not he comes
C) Whether he comes or not
D) He comes or not
61. By using your eyes you can tell the direction _____ light comes.
A) in which
B) from which
C) with which
D) on which
62. A man escaped from the prison last week. It was a long time _____ the guards discovered what had happened.
A) before
B) until
C) since
D) than
63. A little learning is a dangerous thing, for you might as well not know a thing _____ know it only imperfectly.
A) that
B) as
C) than
D) but
64. Hard as _____, it is quite easy to drill a hole on it with laser.
A) is the diamond
B) does the diamond
C) the diamond is
D) the diamond does
65. "It was very cold yesterday." "_____."
A) So was it
B) So it was
C) It so was
D) Was it so