摘要：15．I'm very glad to see that your vocabulary is gradually . A．building up B．turning up C．coming up D．waking up 答案与解析:A build up“增加 .句意:看到你的词汇量在逐渐增长.我很高兴.turn up“出现 ,come up“出现.发生 ,wake up“醒来 .

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