Many exams include an activity where you have to find the mistake in a given sentence.
Here is an extended activity (200 questions) where you can practice this and sharpen your exam skills. For each question, you will get detailed feedback, and you can practice sets of 20 questions at a time.
The link is:
http://www.roadtogrammar.com/step/
Screenshots:
One of the most useful features of Road to Grammar is the weekly "microlessons". These are short slideshows featuring a grammar/language point or a vocabulary set with audio and examples. A different microlesson is featured every week.
October's microlessons include:
Negative inversion refers to where we invert the normal sentence structure and begin a sentence with an adverb or adverbial phrase instead. ...
