৫১তম বিসিএস ফাইনাল মডেল টেস্ট ও রিভিশন৬৬টি পরীক্ষায় এসেছেপ্রশ্ন ২১Which of the following is correct?কThe teacher said, "All living beings have needed water to survive".খThe teacher said, "All living beings needed water to survive".গThe teacher said, "All living beings need water to survive".ঘThe teacher said, "All living beings are needing water to survive".উত্তর দেখুন