单选题 Job fairs are usually very lively and informal, and you can roam ______, surveying what is on offer and gathering literature on jobs you might not have considered in the everyday run of things.
【正确答案】 B
【答案解析】句子中roam意为“漫游,闲逛,徜徉”。四个选项中,at peace处于和平状态;at leisure空闲着,从容地;at rest安眠,长眠,静止;at speed飞快地。只有at leisure能和roam(闲逛)搭配。