What is concerning us greatly is ________ the workers held up in that area yesterday will be set free.
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A
that
B
what
C
when
D
which
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—Don't you think it necessary that he ________ to Miami but to New York?—I agree, but the problem is ________ he has refused to.
#79341
A
will not be sent；that
B
not be sent；that
C
should not be sent；what
D
should not send；what
Water，which seems so simple and common，is________makes life possible.
#79483
A
what
B
that
C
which
D
how
What we really concern is _____ those orphans can recover from the earthquake psychologically.
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A
that
B
if
C
why
D
whether
Mary is a humorous and warmhearted woman and that is ________ she is a most popular person in her community.
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A
whether
B
because
C
how
D
why