In order to know those who really need help as well as how to help them, ________ to help others.
#95245
A
going
B
to go
C
gone
D
go
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Unless ________ to speak, you should remain silent at the conference.
#95045
A
invited
B
inviting
C
being invited
D
having invited
--Do you know the man ___ John Brown? ---I only know ___ he is called.
#98172
A
called, how
B
called, what
C
who called, how
D
whom called, what
In 1636, Harvard（哈佛大学）is one of the most famous universities in the United States.
#94015
A
Being founded
B
It was founded
C
Founded
D
Founding