Print the page in color so that you have enough for each student in your class (if you have 24 students, print the page 12 times). Cut each page in half. Put students in pairs giving each person in the pair half of the sheet. In this drill, one of the students says the first sentence. The other student responds with the opposite.
Student A: Marta is tall.
Student B: No, Marta is short.
The student with the original sentence knows what his partner should say so s/he can correct his/her partner if s/he makes an error.
When students get to the bottom of the sheet, they switch papers and do the drill again. In my classroom, students must repeat the drill until they are instructed to stop.