None of us was good at swimming, so the crossing of this dangerous river was really a_________.
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A
motivation
B
symptom
C
conflict
D
challenge
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He knows several languages, ______, he knows English and Japanese.
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A
such as
B
for example
C
that is
D
for an example
---What do you know about Russia?----So far as I know, it is _______the United Kingdom.
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A
as seventy times the size of
B
the seventy times size of
C
seventy times as the size of
D
seventy times the size of