—Could you tell me how I can improve my English?—Sure. _______, you could speak it as much as possible.A. After all B. In the end C. By the way D. First of all 答案：【答案】D【解析】句意：——你能告诉我怎么样才能提高英语吗?——可以。首先，你要尽可能多地说英语。考查介词短语。A. After all毕竟、终究；B. In the end最后、终于；C. By the way顺便说一下；D. First of all首先。根据题干可知说话人建议对方如何提高英语，首先要尽可能多地说英语，所以D选项符合题