【正确答案】 C

【答案解析】解析：get…across(to sb.)把……讲清楚，让听懂，使被了解(如：He got his meaning across, get across a theory to his students．The message got across all right)。get around(消息)传开；四处走走；回避，绕过：(get around to sth．)找时间做某事。get on to接着干(下—件事，讨论下—个问题)。get down to sth.开始认真干某事。