Suppose, Sunit is weak in English. He wants some suggestions from Gulib for improving his skill in English. Now, write a dialogue between Sunit and Gulib about how to improve in English. (ইংরেজিতে কীভাবে ভালো করা যায় তা নিয়ে দুই বন্ধুর মধ্যে সংলাপ।)