—Have you finished the book?—No，I’ve read up to____ the children discover the secret cave.
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which
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what
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that
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where
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Cloning plants is straightforward cloning animals is very complicated .
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so that
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although
C
while
D
as if
He has been talented at designing and creating things ________ he was young.
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when
B
before
C
since
D
while
He thought mattered most in improving your spoken English was enough confidence and practice.
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why
B
what
C
which
D
that
After ________ seemed an endless wait, it was her turn to enter the interview room.
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what
B
why
C
that
D
how
.Look out! Don’t get too close to the house ______ the roof is under repair.
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A
whose
B
which
C
of which
D
what