Где ошибка в употреблении оборота there is (there are) 1) there is the newspaperin the box 2)there was three apples on the table 3)are there chairs in your room ? 4)there were no mistakes in his control work.
Во втором предложении должно быть were, так как там множественное число, 3 яблока
Ошибка во2) правильно:There were three apples on the table.