(2013·济南二模)It was during the Ming Dynasty ________ the Great Wall was repaired and extended to take on the appearance it has today.
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A
when
B
which
C
what
D
that
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_______ we have planned ahead might change when we put it into practice.
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A
Whatever
B
Whenever
C
Whoever
D
However
I have been keeping the portrait ________．I can see it every day, as it always reminds me of my childhood in Paris.
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A
since
B
where
C
as
D
if
Mobile phone users have developed a series of symbols, such as and to show ________ they feel.
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A
which
B
when
C
how
D
why
.I am here not because I want to earn money ________I want to educate the children.
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A
but
B
but because
C
but for
D
and because