He finally realized the of a well-balanced diet.
A. pleasure
B. importance
C. politeness
D. happiness
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I don't want to get in this serious trouble.
A. prevented
B. involved
C. implicated
D. studied
I'm trying to break the of staying up too late.
A. problem
B. case
C. habit
D. test
We received a letter from him .
A. kindly
B. recent
C. mostly
D. recently
provides us with warmth and light.
A. Electric
B. Electicity
C. Economical
D. Economic