All at once : আচমকা; হঠাৎ; সহসা; আকস্মিক; তত্ক্ষণাৎ; কথা নেই বার্তা নেই;; at once;
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Appropriate Prepositions
Adhere to (লেগে থাকা, অটল থাকা): You should adhere to your principal.
Anxious about (কোনো কিছুর ব্যাপারে চিন্তিত বা উদ্বিগ্ন): Karim is anxious about his father’s death. Karim is anxious for getting a job.
Care of(যত্ন নেওয়া): You should take care of your health.
Contemporary of (সমসাময়িক): William Wordsworth was a contemporary for greater efficiency.
Stare at (চাওয়া বা তাকানো): He stares at me.
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Idioms
Do yeoman’s service (বিশেষ উপকার করা): Freedom fighters have done yeoman’s service for country.
Flesh and blood (রক্তমাংসের শরীর): She's my own flesh and blood; I can't believe she treated me that way!
Maiden speech (প্রথম বক্তৃতা): His maiden speech fell flat on the audience.
Nip in the bud (অঙ্কুরে বিনষ্ট হওয়া): All his hopes were nipped in the bud.
Part and parcel (অবিচ্ছেদ্য অংশ): Education is part and parcel to build a civilized nation.