问题
选择题
A digital ring is locked on every newborn baby’s foot _______ they are taken by strangers out of the hospital.
A．because
B．when
C．so that
D．in case
答案
答案：D
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A digital ring is locked on every newborn baby’s foot _______ they are taken by strangers out of the hospital.
A．because
B．when
C．so that
D．in case
答案：D
