Strenuous : অধিক শ্রমসাধ্য; কষ্টকর;
Related Words
sterns  strains  streams  strengths  strenuous  string course  strings  See Words Also In
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Appropriate Prepositions
Adhere to (লেগে থাকা, অটল থাকা): You should adhere to your principal.
Apart from(ছাড়া, ব্যতীত, দূরে): They pave apart from each other.
Enter into (আলোচনা করতে আরম্ভ করা): Let’s not enter into details at this stage.
Quarrel over (কোন বিষয়ে ঝগড়া করা): Do not quarrel over this trifling matter, let it be drop.
Relation with (সম্পর্ক): I have no relation with the culprit.
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Idioms
Now and then (মাঝে মাঝে): He comes here now and then.
Safe and sound (নিরাপদে)— He reached home safe and sound.
See to (বিবেচনা করা)— Can you see to it that everyone gets a copy of this memo?
Tooth and nail (তীব্রভাবে): He fought tooth and nail for the sake of country.
Yellow dog (হীন ব্যক্তি) - A yellow dog is always hated by all.