ইংরেজি ২য় পত্র প্রশ্ন

Completed passage:

Trees are very important (a) for us. They produce oxygen (b) which is a must for man and all living beings. We must realize (c) that they help us in many ways. (d) If trees are less in number, there will be an increased amount of carbon di-oxide in the atmosphere (e) and it will enhance greenhouse effect.

Rules: (a) "important"-এর পরে preposition-যোগে for/to us; (b) oxygen-কে বর্ণনা করতে which; (c) noun clause শুরু করতে that; (d) শর্ত বোঝাতে If; (e) ফলাফল যুক্ত করতে and।