All their attempts to( )the child from the burning building were in vain (徒然).
考试:=$ecms_gr[fenlei]?>
科目:=$ecms_gr[kemu]?>(在线考试)
问题:
A:regain
B:recover
C:rescue
D:reserve
答案:
解析:
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All their attempts to( )the child from the burning building were in vain (徒然).
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