I am sure it is a mistake 

= It is a mistake and I am sure of it.

All must submit to destiny. 

= All can not but submit to destiny.

ডাক্তার রোগীর নাড়ি পরীক্ষা করলেন।   = The doctor checked the patient's pulse.

Millinium = Millennium

Take care of your health. 

= Let your health be taken care of.

Hipopotanmos = Hippopotamus

The author name of Harry Pottar is G.K. Rawling.

Let a balance diet be taken. (Active) 

= Take a balance diet.

You are requested to open the tender. (Active) 

= Please open the tender.

Who stole my pen? 

= By whom was my pen stolen?

এক মাঘে শীত যায় না।

= One swallow does not make a summer.

বিনয় মহত্বের ভূষণ। 

= Modesty is embellishment of greatness

সে হাঁপাতে হাঁপাতে এখানে আসল।

= He came her panting

I know that he is honest.   = I know him to be honest.

"Why have you beaten my dog"? he said to me. 

= He demanded of me why I had beaten his dog.