Challenger : আহ্বানকারী;
Related Words
challenger  cleanser  See Words Also In
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Appropriate Prepositions
Consist of(গঠিত হওয়া): The committee consists of ten members.
Faithful to (বিশ্বস্ত): The dog is very faithful to its master.
Hard of (কানে খাটো বা কম শোনা): Ratan is a hard of hearing.
Look over (পরীক্ষা করা): He was looking over the answer scripts.
Satisfied with (সন্তুষ্ট): The authoress was highly satisfied with Jerry.
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Idioms
At the eleventh hour (at the last moment-শেষ মুহুর্তে adv.) The patient was in a dangerous condition and the doctor came at the eleventh hour.
From cradle to grave (দোলনা থেকে কবর পর্যন্ত): Everyone has to learn from cradle to grave.
In a nutshell (সংক্ষেপে): Tell the whole story in a nutshell.
Pandora’s box (আপাতঃ দৃষ্টিতে ভালো মনে হলেও আসলে ভালো নয়)—His words proved to be Pandora’s box.
Worthy of (যোগ্য) - He is worthy of a good job.