v. to change sth. slightly, especially in order to make it more suitable for a particular purpose;
A. persist
B. modify
C. oppose
D. oblige
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n. the study of the nature and meaning of the universe and of human life
A. physician
B. philosophy
C. parliament
D. nationality
adj. happening or done sometimes but not often
A. pessimistic
B. occasional
C. optional
D. marvelous
v. to treat sb. in a cruel and unfair way, especially by not giving them the same freedom, rights, etc.. as other people
A. oblige
B. persist
C. oppress
D. offend
adj. expecting bad things to happen or sth. not to be successful;
A. pessimistic
B. nuclear
C. orderly
D. oriental