Part III. Complete the sentences with the correct form of the verbs in brackets.

* Imperative

1.  _____________________(go) upstairs.

2.  ____________________(not/ swim) in this lake.

3.  _____________________(do) your homework.

4. _________________(not/ throw)  trash away on the school yard.

5.  ______________________ (not/ play) football in the yard.

6.____________________(not/ be) late for school.

7. ____________________ (brush)your teeth.

8.  _____________________(not/talk) during the lesson.

9. ________________ (write) this in your notebook.

10. ________________ (not/ feed) the animals in the zoo.

11. ______________ (not/ use) plastic bags.

12. _______________(read) the instructions.