题目内容
One night all of his ________ signs began to drop sharply and the head teacher, who believe in
the concept that no one should die alone, began to call his family members to the hospital.
the concept that no one should die alone, began to call his family members to the hospital.
[ ]
A. common
B. obvious
C. vital
D. ordinary
B. obvious
C. vital
D. ordinary
C
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