Question

【题目】I ______ very hard on English since I came to another school three years ago.

A. have worked B. worked C. work D. are working

Answer 1

【答案】A

【解析】句意：自从我三年前来到另一所学校以来，我一直在努力学习英语。since I came to another school three years ago表示的是截止到目前为止的时间段，用于现在完成时态的句子中，故答案为A。