．How long is it ______ we last spent the holiday in the country together?
#34786
A
until
B
before
C
since
D
that
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Mary felt sad over the loss of photos she had shot in Australia, ______ that was a memory she especially treasured.
#31852
A
as
B
which
C
when
D
where
________ everyone else wouldn’t go to the mountain area, he went without a second thought.
#80487
A
As long as
B
While
C
Where
D
In spite of
It is said _________ was how Chinese characters developed.
#34565
A
that
B
that which
C
that that
D
what