3. Complete the sentences. Use mustnt or neednt + one of

3. Complete the sentences. Use mustnt or neednt + one of these verbs:
clean, forget, hurry, lose, wait, write
1) The windows arent very dirty. You _____ them.
2) We have a lot of time. We _____ .
3) Keep these documents in a safe place. You _____ them.
4) Im not ready yet but you ____ for me. You can go now and Ill come later.
5) We _____ to turn off the lights before we leave.
6) I _____ the letter now, I can do it tomorrow.