Transformation of sentences

I shall always remember you. (Negative)

Translate into English: মেয়েটিকে কাঁদতে দেখলাম।

Change the voice:

He was eating an apple.

Put the correct prepositions in the blanks-

There is a box of cheese ........ the fridge.

What is lapping length? How to calculate lapping length for same diameter rod and different diameter rod ?

Fill in the gaps with appropriate prepositions

The girl looks---- her father.