补充对话。 【busy heart What’ s up interesting and important future】 A : Hey, Bob. B : Hi, Tom. ()? A : I haven’ t seen you those days, how are things going? B : I’ m () learning English. A : So, you are enjoying learning English, right? I don’ t like English at all. B : Why? It’ s so () for it is very useful for our () work. A : I know it is important but I just don’ t know how learn it well, you know, I’ m bad at it. B : Come on, if you put your () in it, I dare say, you can learn it well.