Don’t believe in those ads that you can master a language in one month. Instead, it is a(n) _______process, which may last for years. 
#18994
A
rapid
B
instant
C
gradual
D
regular
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There was a(n) __________ moment when the plane suddenly dropped.
#20575
A
anxious
B
worried
C
secure
D
exciting
  After a long time for many years, he is now _____.
#19853
A
sickness for his home
B
sicking for his home
C
illness for his home
D
sick for his home