O clock : ঘটিকায়; ঘড়িতে বাজে;
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Appropriate Prepositions
Aim at(আঘাত করার জন্য লক্ষ্য স্থির করা): The hunter aimed at the tiger.
Careless of(অসতর্ক): Do not be careless of your health.
Look over (পরীক্ষা করা): He was looking over the answer scripts.
Perfect for (সঠিক, মানানসই): The new book is perfect for you.
Play on (বাজানো): They play on the piano.
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Idioms
Bring to book (reproach-Start- ভর্ৎসনা করা) The father brought his son to book for his failure in the exam.
Bad names (গালমন্দ—n) He called the man bad names.
Gift of the gab (বাকপটুতা): An advocate should have the gift of the gab.
Learn by heart (মুখস্থ করা)— He learnt the poem by heart.
Wild goose chase (useless pursuit, পন্ডশ্রম) —Do not waste time in wild goose chase.