选A
解释:ask 有询问和请求的意思
es :1.ask sb 问某人
2.ask sb to dinner 请某人吃饭
speak 一般指致词等(一个人在一群人中讲话) 或者说话的动作。
es :speak to 对......说话(强调动作)
tell 告诉 强调一个人向另一个人或多个人传达某种信息
es:tell me the truth 告诉我实话
talk 强调的是两个人或两人以上之间的谈话,有一种交流的意思
ex:talk with sb 跟某人谈话
偶而,talk 和speak 意思相近
用法:
speak+语言
speak to sb.
say+说的内容
tell sb. sth.
tell sth. to sb.
tell sb. to do sth.
tell sb. not to do sth.
ask好像是ask sb. to do sth.
talk to sb.
talk with sb.