Correct the errors in the following sentences. 1) My father never gave me many advices. 2) Our school bought two pieces of equipments for the lab. 3) In modern age, electronics have been developing very fast. 4) He did too little preparations for his examination. 5) There are a book, two pencils and three notebooks on the desk. 6) Every means have been tried but without much success. 7) Ten dollars are all that I can afford to pay for the recorder.