I borrowed several books from the library, ________ are about English study.
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A
two of them
B
and two of which
C
two of which
D
two of what
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Many experts agree that there is a possibility___ in this area in the following days.
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A
when some more earthquakes may happen
B
that some more earthquakes may happen
C
where may some more earthquakes happen
D
what may some more earthquakes happen