Null and void : অকার্যকর; বাতিল; খারিজ; বৈশিষ্ট্যহীন; আইনত কার্যকর নয়;
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Appropriate Prepositions
Appear at/in(উপস্থিত হওয়া): I should appear at/in the exam hall in time.
Composed of(তৈরী): This medicine is composed of vitamins and minerals.
Desist from (বিরত থাকা): She desisted from making this.
Inquire for (দেখা করতে চাওয়া): He inquires for the manager.
Qualified for (যোগ্য প্রতিপন্ন হওয়া): No candidate was properly qualified for the post.
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Idioms
Acid test (অগ্নি পরীক্ষা): You must succeed in the acid test of the time you live in.45
At the top of (শীর্ষে): The boy shouted at the top of his voice.
At times (মাঝে মাঝে): He at times comes here.
Hold water (ধোপে টেকা): This policy will not hold water in this situation.
In black and white – (লিখিতভাবে) – Put forward your proposal in black and white.