Keep a straight face : হাসি গোপন করা; হাসি সংবরণ করিয়া থাকা;
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Appropriate Prepositions
Care for(গ্রাহ্য করা): I do not care for you.
Dependent on (নির্ভরশীল): Sepm is dependent on his father.
Famous for (বিখ্যাত): Smith is famous for his wisdom.
Fond of (প্রিয়/অনুরাগী): Children are fond of sweets.
Informed of (অবহিত): I was not informed of your misfortune.
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Idioms
All along - (সব সময়): I was present in the meeting all along.
End in smoke (ব্যর্থ হওয়া): All his plans ended in smoke.
Part and parcel (অবিচ্ছেদ্য অংশ): Education is part and parcel to build a civilized nation.
Right and left (এলোপাথাড়ি - indiscriminately): He planted trees right and left.
Set something right (ঠিক করা)— He will set the machine right.