Incident ray : আপতিত রশ্মি;
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Appropriate Prepositions
Aware of(অবগত): I am not aware of his dishonesty.
Bask in(রোদ পোহানো): The boys and girls are basking in the sun right now.
Due to (কারণে): His absence is due to illness.
Plead for (ওকালতি করা): He pleads for justice.
Side with (পক্ষ অবলম্বন করা): The Chairman sided with the powerful party.
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Idioms
Kith and kin (নিকট আত্মীয়): He has no relation with his kith and kin.
Lame excuse (বাজে ওজর): The lame excuse will not do.
Man of letters (পন্ডিত ব্যক্তি): You are truly a man of letters.
Salt of the earth (গুরুত্বপূর্ণ ব্যক্তিবর্গ) —The salt of the earth is remembered always.
Up to (পর্যন্ত) - I have done the exercises up to page 40.