阅读下面短文，从短文后各题所给四个选项（A、B、C和D）中，选出可以填入空白处的最佳选项。

    “How can I learn English well?” “This is a 1 many students may ask. In my opinion, the most effective(有效的) 2 is to learn lessons by heart. If you can recite the text and write it out, you will learn it pretty well. And if you can tell 3 your own words about 4 the lesson says, you are a very successful learner indeed. Your English will be quite perfect. This is a difficult task. However, 5 you try to learn by heart only part of each lesson, you'll find it not so hard as you might have thought.