Up and down : ইতস্তত; একবার এদিক একবার ওদিক;
Related Words
up and doing  up and down  up-and-down  See Words Also In
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Appropriate Prepositions
Arrange for(ব্যবস্থা করা): We have arranged everything for our study tour.
Based on(প্রতিষ্ঠিত, ভিত্তিক): His information is not based on the correct information.
Close to(নিকটে): Our College is close to the Post Office.
Feed with (কোনো কিছু খাওয়া): They feed the cow with grass.
Inferior to (নীচু/হীন): He is inferior to his neighbor.
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Idioms
End in smoke (ব্যর্থ হওয়া): All his plans ended in smoke.
Fish out of water (অস্বস্তিকর অবস্থা): When he came to the village, he felt like fish out of water.
Man of letters (পন্ডিত ব্যক্তি): You are truly a man of letters.
Now and then (মাঝে মাঝে): He comes here now and then.
Yellow dog (হীন ব্যক্তি) - A yellow dog is always hated by all.