Mary ____ ____in China since three years ago .填什么
问题描述:
Mary ____ ____in China since three years ago .填什么
答
Mary _has___ __been__in China since three years ago .
玛丽在中国待了两年了.现在完成时表示从过去延续到现在.
Mary is (has been)in China since three years ago .