_____ do you meet each other？
A.how many days
B.how often
C.how long
D.how much time
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____ crimes have been committed in the name of justice.
A. Massive
B. Huge
C. Vast
D. Enormous
The agreement has been kept ____ my part but not his.
A. on
B. in
C. for
D. at
The scientist （argued） that his discovery had changed the course of history.选择能代替括号里的选项。（）
A. disagreed
B. quarrelled
C. persuaded
D. tried to prove
Wise people ___ forming fixed opinions.
A. avoid
B. escape
C. refuse
D. reject
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