Peering into the crowd, Luanno saw Robin walking slowly toward his father, his head tilted to one side.
【正确答案】 B
【答案解析】解析：句意：Luanno向人群中张望，看到Robin头倾向一边，慢慢走向他父亲。peer into往…中费力看。closely仔细地，紧密地。casually偶然地，随便地。unintentionally非故意地。cautiously谨慎地。