Obsolescence : বিলোপপ্রবণতা; পুরান হত্তয়া;
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Appropriate Prepositions
Arrange for(ব্যবস্থা করা): We have arranged everything for our study tour.
Convince of(বিশ্বাস হওয়া): I am convinced of your efficiency.
Easy of (সরল): The teacher is easy of approach.
Faithful to (বিশ্বস্ত): The dog is very faithful to its master.
Look into (তদন্ত করা/অনুসন্ধান করা): I am looking into the matter.
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Idioms
At times (মাঝে মাঝে): He at times comes here.
Bear (a) grudge (bear hostility to— শত্রুতা বা বিদ্বেষ পোষন করা—V) We should not bear (a) grudge against our brethren.
Pack up a quarrel (ঝগড়া মিটানো)— He packed up their quarrel.
Take into account (বিবেচনা করা): Your activities should be taken into account.
Turn down (refuse, প্রত্যাখান করা) —He turned down my proposal.