用it作形式主语的句型改写下列句子

It's funny visiting the museum.
It's hard to learn to drive.
It's a waste of time palying computer games all day long.
It's impossible to finish the work in day.
It's difficult to answer the question in English.
It's important for me learning Chinese well.
It's unlikely to win the game for us.
It's useful for us doing some maths exercises.
It's impolite to speak with your mouth full.
It;s easy for my mother cooking delicious food.