摘要：Perseverance is a kind of quality----and that is it takes to do everything well. A. why B. that C. what D. which
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Perseverance is A kind of quality—-and that is _____it takes to do everything well.
[ ]
A．why
B．that
C．what
D．which
Perseverance is a kind of quality—and that is ________it takes to do everything well.
[ ]
A．why
B．that
C．what
D．which
Perseverance is a kind of quality-and that is ________ it takes to do everything well．
[ ]
A．why
B．that
C．what
D．which