Complete the following sentences with a/an, the or no article.he is

Complete the following sentences with a/an, the or no article.he is singing. do you know......song?
i can sing well. i like.......... english and........ russian songs.
at..... age of four...... david could read and write.
did you go to........school at..........age of six?
there was.......apple in...........bag.where is........apple?
there was........pen on.......desk.where is........pen?
there is.........long ruler on.......teachers table.that is.......longest ruler we have.
there is........cup on.....table.shall i wash.......cup?there are........carpets on.......floor.do you like........carpets?there is..........picture on.....wall.i drew........picture yesterday.