1.I am in the sixth form. - I am not
in the sixth form
2.We are reading an interesting story.- We are not reading an interesting story
3.They study English for ten years.- They don’t study English for ten years
4.My sister plays the piano very well.- My sister does not play the piano very
well
5.He was at the cinema yesterday.- He was not at the cinema yesterday
6.The children were playing in the yard.- The children were not playing in the
yard.
7.I finished my work last Tuesday - I didn’t finish my work last Tuesday.-
8.We kept some domestic animals two years ago.- We did not keep some domestic
animals two years ago.
9.They will write a test tomorrow.- They will not write a test tomorrow
10.He will go to the seaside next summer.- He will not go to the seaside next
summer
11.I have already cleaned my room.- I have not already cleaned my room
12.She has done all the exercises.- She has not done all the exercises.