The book is widely used in the Asian continent. (Frame a Wh question to get underline part as an answer)

Look at the underlined part of each sentence. Below each sentence are given three possible substitutions for the underlined part. If one of them is better than the underlined part, mark accordingly on the Answer Sheet. If none of the substitutions improve the sentence, mark (d) on the Answer Sheet. The editor regretted that he was inable to make use of the article.

Each question in this section has a sentence with three underlined parts labelled (a), (b) and (c). Read each sentence to find out whether there is any error in any underlined part and indicate your answer in the Answer Sheet against the corresponding letter, i.e., (a) or (b) or (c). If you find no error, your answer should be indicated as (d). (a) He told us (b) that (c) he has not read the book. (d) No error