【正确答案】 C

【答案解析】解析：crowd v.聚集，群集，拥挤(如：They had managed to crowd into a train．The eager spectators crowded into the station．Swimmers crowded the beaches．)。cram vt．挤，塞：把……塞满。stuff vt．填装。jam v.堵塞，挤满(注：crowd主要指人挤满，虽然也可指物：cram／jam主要指物挤满，虽然也可指人)。