Error slips - verb forms

Instructions

Cut the strips and place them face down in the centre of the group.
Students take turns to pick up a strip and fold it. They should show the left side to the other students. The right side contains the answer. The others try to correct the sentence.
If done competitively, the first student to give the correct answer wins the strip.
Give out the second sheet after the activity has finished. This gives the answers to all of the strips along with a brief explanation for each.