I often______it in English 选 A.sprak B.talk C.say D.tell

speak是较为正式的在公开场合的演说, speak to sb 同某人讲话..
say是最为普遍通用的说,可说say something或say something to somebody,say常与直接引语连用
talk是谈论某事,不及物动词
tell在某人告知事实或提供信息时使用,常与what,where等词连用.
你可以多做一些例题,多体会一下就知道了,下面有几个句子你可以看一下：
Do you speak Chinese?你说汉语吗?
Look!Our teacher is talking 看,我们的老师正在演讲呢.
Idon’t know what he said.我不明白他所说的
When I was young, my mother often told me a story in the evening.
在我小时,妈妈晚上常给我讲故事.
所以说选C