৫১তম বিসিএস ফাইনাল মডেল টেস্ট ও রিভিশন৮টি পরীক্ষায় এসেছেপ্রশ্ন ৪৭Pick out the correct sentence.কক) We have not had a holiday since the beginning of the yearখখ) We did not had a holiday since the beginning of the yearগগ) We have not have a holiday since the beginning of the yearঘঘ) We do not having a holiday since the beginning of the yearউত্তর দেখুন