What is water cement ratio ? Draw a characteristic diagram of water cement ratio.

Make sentences with the following phrases and Idioms or pair of words

advise, advice

Answer the following questions:

Bangladesh is one of the most vulnerable countries in the world due to the climate change. (Make it positive degree)

Translate the following sentences into English.

সে সাঁতার কাটতে জানে না।

Correct the following sentences:

Ahmed has finished from his work.

Change the voice:

Never tell a lie