The conference discussed the fair ___________of income and wealth.
A. distribution
B. distribute
C. contribution
D. contribute
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I was so _____ in today's history lesson that I didn't understand anything.
A. amazed
B. confusing
C. confused
D. amazing
I never forget my ____ with you for the first time.
A. to meet
B. meeting
C. to have met
D. having to be meeting
She was so angry that she left like ____ something at him.
A. to throw
B. throwing
C. to have thrown
D. having thrown
We are _____ in different kinds of extracurricular activities on campus.
A. having involved
B. to involve
C. involved
D. involving
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