Oral Mistakes (or Things to Think About)
Short-answer quiz

This exercise has real mistakes from students. Unfortunately, you have to put in the EXACT correct answer. To make it more difficult there are a few completely correct sentences in the exercise. The answer for these is just to type the same sentence as an answer.
To do the exercise, type your answer, then press "Check". If you need help, you can click on the "Hint" button to get a free letter.