Question

My sister has learnt English         .

    A. for twelve years ago       B. since she was four

    C. twelve years ago          D. at the age of four

Answer 1

【答案】B

【解析】考查现在完成时的时间状语。由谓语动词has learnt可知，应用表示一段时间的时间状语，A项表达错误；C、D两项用于一般过去时，所以选择答案B。