1 . Often, our way of thinking is ________ on stereotypes-ideas about what someone or something is like. (根据句意填空)

2 . “There was no colour ________ between us,” said Brand, who later worked as a guide showing tourists around Robben Island. Like me, Mendela came from a farm. We understood that we shared the same sky and the same air. “Two men got on well and became quite close, although this wasn’t allowed by the prison ________.”(根据句意填空)

3 . He________and was wondering how to hide his inner embarrassment.
他双手抱头，在想如何掩饰他内心的尴尬。