Students only need to tick the option (A,B,C or D) where they can point a mistake and not provide the rectified answer. In error recognition questions, its not necessary for the phrases to be arranged in option column in consecutive manner. It can be haphazard where the second phrase is placed in option A or third phrase in option D. 
Note: In error recognition questions of TOEFL exam, students only need to pick where there is a mistake and not rectify the answer. The number of error recognition questions in paper based TOEFL exam is around 25 and in internet based TOEFL exam, it numbers around 15. Time allotment (as suggested by TOEFL mentors) for error recognition questions are as follows: 
Here are three quick tips to deal the error recognition questions of TOEFL test: 
Point of view method Abundant practice will enable this in all test taker where they can see, read and immediately find out where the mistake is in the sentence. This is the easiest and smartest way to solve the error recognition questions. However, this takes time and is also, requires ample practice before applying at the TOEFL exam center. In order format Here you read as many times required and then consider each underlined phrase one at a time. You will be able to find out the with the mistake. However, its recommended that you cross check every phrase and then tick on the answer script. Since the mistakes in error recognition sentences are very minute to observe, this overall crosschecking is recommended. Random guesswork If absolutely unprepared about the error recognition questions, then this is the method to opt for. Simply guess an answer and shoot for it. If lucky you will bag a score and again you might go wrong. This is the last option when you get too difficult a question to crack or you are completely clueless. 
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