Keep a straight face : হাসি গোপন করা; হাসি সংবরণ করিয়া থাকা;
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Appropriate Prepositions
Akin to(সমজাতীয়): These are akin to one another.
Appetite for(ক্ষুধা): He has no appetite for food.
Cruise to (জয় লাভ করা): The Bangladesh team cruised to their fifth successive win this afternoon.
Deal in, with, out (ব্যবসা করা, ব্যবহার করা, বন্টন করা): The man deals in rice. He does not know how to deal with a customer. The Chairman dealt out the relief materials to the flood affected people.
Hard of (কানে খাটো বা কম শোনা): Ratan is a hard of hearing.
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Idioms
At a round rate (at the fixed price – নির্ধারিত মূল্যে) Things are selling in the shop at a round rate.
Bear in mind (remember— মনে রাখা —V): You should also bear in mind the additional costs of the mortgage.
Bad book (disfavour-খারাপ নজর —n) The secretary has fallen in the bad book of the manager.
Take to heart (মর্মাহত হওয়া)- He really took it to heart when I asked him to reconsider.
Without fail (অবশ্যই) - You must attend the meeting without fail.