Water, which seems so simple and common, is ______ makes life possible.
#79418
A
what
B
that
C
which
D
how
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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
_____ the flight to New York will be delayed is ____ I'm especially worried about.
#79409
A
If; what
B
Whether; that
C
When; that
D
Whether; what
Being determined is a good quality and that’s it takes to do anything well.
#79412
A
what
B
which
C
where
D
how