What is the reason for the game’s________ appeal?
A. duration
B. during
C. endure
D. enduring
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We should spend the money on something that will ___________ everyone.
A. helped
B. use
C. facilitate
D. benefit
He would never hurt anyone _____.
A. international
B. purpose
C. intentionally
D. intentional
Many kinds of apps on smart phones are used to _________ English by college students.
A. study
B. studying
C. studies
D. studied
_________ college takes hard work!
A. Surviving
B. Survive
C. Survives
D. To surviving