English Wizard১টি পরীক্ষায় এসেছেপ্রশ্ন ২৫The task is so difficult that the boy cannot solve it. The underlined clause is an --কক) Adverb clause of reasonখখ) Adverb clause of consequenceগগ) Adverb clause of purposeঘঘ) Adverb clause of mannerউত্তর দেখুন