Step by step : ধাপে ধাপে; ক্রমশ; ক্রমে ক্রমে; এক পা এক পা করে;
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Appropriate Prepositions
Adequate for(পর্যাপ্ত): The loan given by the bank is not adequate for the farming project.
Contrary to(বিপরীত, পরিপন্থী): Students should not act contrary to the rules of discipline.
Fed up with (বিরক্ত): He is fed up with waiting for her.
Innocent of (নির্দোষ): The maid servant was proved innocent of the alleged theft.
Perfect for (সঠিক, মানানসই): The new book is perfect for you.
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Idioms
At all (in the least degree – মোটেও না) There is no water at all in the pond.
From cradle to grave (দোলনা থেকে কবর পর্যন্ত): Everyone has to learn from cradle to grave.
Liable to mislead (প্রতারণাপূর্ণ- deceptive): Appearances can often be liable to mislead.
Silver living (hope- আশা বা ভালো দিক): Every cloud has a silver lining.
Up to (পর্যন্ত) - I have done the exercises up to page 40.