单选题 None of us expected the chairman to______ at the party. We thought he was still in hospital.

【正确答案】 B

【答案解析】解析：“turn up”可以表示“出现”，符合题意。“turn in”意为“上交，归还，上床睡觉”；“turn over”意为“移交，翻转，仔细考虑，换频道”；“turn down”意为“拒绝，驳回”，均不符合题意。