He is waiting
They are playing
??? Lying
??? Having
?? Sitting
1 you must help your mother about the house.
2 you must go shopping
3 you mustn't get up late
4 you must look after your pet
5 you mustn't eat too much ice cream.
6 you must come to school on time.
7 you mustn't be late for school
8 you must take your dog for a walk
9 you must feed your pet
10. you mustn't watch tv too late.
11 you must do exercises every day
12 You must wash your hands before you eat.
you mustn't go to bed too late.
А какой рассказ и какую загадку?