It’s difficult to draw the boy’s attention to his lesson.
A. so far
B. too far
C. far from
D. far too
网友回答
A. so far
B. too far
C. far from
(答案→)D. far too
解析：考查词组：A. so far迄今为止，B. too far太远，C. far from远非，一点也不，D. far too很，非常，修饰形容词副词，句意：把男孩的注意力吸引到他的课非常难。选D。