1) Let her help you with the cooking.
2) Don't let him read in bed.
3) Let her help your sister to do the room.
4) Let me cook breakfast for you.
5) Don't let your daughter turn on the radio.
6) Don't let them have coffee in the evening.
7) Let Mary help you about the house.
8) Don't let Nick take your new bike.
9) Don't let her leave the house without her coat on.
10) Please let him play chess with my brother.