This is ____ useful book. put articles a, an, the

In the given sentence, identify the segment which contains the grammatical error. In the evening he likes to read books and articles that have nothing to do of his work. (a) do of his work (b) In the evening he likes (c) that have nothing to (d) to read books and articles

fill in the blank with suitable article given in the bracket. ...... Gita is ...... holy book. (a/an/the)

Plastic is used for making a large variety of articles of daily use and these articles are very attractive. But it is advised to avoid the use of plastic as far as possible. Why?