The answer of the very first question should be tallest.. because in superlative degree we use the article'the' and also she is referred as the tallest above her two sisters.
Ma'am exam t keneke ans bilak tick koriba lage ba kenekua kenekua rule follow koribo lagibo..exam kiman hours karne hbo..aibor topic ata video bonai dile amar karane helpful habo.. bcz for some students it's going to 1st attempt..So I request to you ... It's going to helpful for everyone... Thank you 🌼