(2013·安徽，21)From space, the earth looks blue.This is ________about seventyone percent of its surface is covered by water.
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A
why
B
how
C
because
D
whether
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I'd like to start my own business—that's ________ I'd do if I had the money.(2011·江西)
#79343
A
why
B
when
C
which
D
what
Courage is a good quality and is ________ it takes to get over difficulties.
#79374
A
that
B
what
C
which
D
where
Part of the reason Charles Dickens loved his own novel, David Copperfield, was ________ it was rather closely modeled on his own life.(2010·北京)
#79318
A
what
B
that
C
why
D
whether
Making mistakes is a part of life. ________ matters is _________ you do afterwards.
#79439
A
It; what
B
All; what
C
What; what
D
That; what
What made my father satisfied was over 50% of the students in his class had been admitted to key universities.
#79351
A
because
B
that
C
what
D
why