Ack-ack : বিমান-বিধ্বংসী; বিমান-ধ্বংসী;
Related Words
acacia  ack-ack  ackack  See Words Also In
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Appropriate Prepositions
Absorbed in(মগ্ন): I am absorbed in my study.
Complain about (কোনো বিষয়ে নালিশ করা): They complained about the mismanagement of the programme.
Descend on (আক্রমণ করা): Armed thieves descended on the helpless girl.
Indebted to (ঋণী থাকা): We are indebted to the great leaders of the country for their service.
Remedy for (প্রতিকার): There is no remedy for his misbehavior.
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Idioms
At ease (in peace or pleasure – শান্তিতে বা আরামে) A man who has enemies can not live at ease.
Carry the day (জয়লাভ করা) The boys carried the day in the debate competition.
Pros and cons (খুঁটিনাটি): You should consider the pros and cons of the system.
Pass away (মারা যাওয়া)— He passed away last night.
Turn down (refuse, প্রত্যাখান করা) —He turned down my proposal.