问题详情：
![改错：(2017·*高考)Manyairlinesnowallowpassengerstoprintthei...]( "改错：(2017·*高考)Manyairlinesnowallowpassengerstoprintthei...")
改错：(2017·*高考)Many airlines now allow passengers to print their boarding passes online to save their value time.
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【回答】
value→valuable 句意：为了节省乘客们的宝贵时间，许多航空公司允许乘客们自己在线打印机票。time是名词，此处用形容词作定语。
知识点：形容词
题型：短文改错
