2 The sandwiches could be made the day before.
3 The T-shirt should be washed at 30 *C.
4 These bags can be recycled.
5 The shops might be closed tomorrow.
6 Your glasses need to be repaired.
7 Young children ought not to be left alone at home.
8 Customers have to be informed of the new opening hours.
1)
He helped to mother a lot at home
He is helping to us a lot at home
He'll help him a lot at home
2)
She helped me with the cooking
She is helping him with the cooking
She'll help her with the cooking
3)
I made the bed
I am making the bed
I'll make the bed
4)
Baby tidied the room
Baby is tiding the room
Baby'll tidy the room
5)
Brother washed the dishes
Brother is washing the dishes
Brother'll wash the dishes
Ну тут как посмотреть. Если говорящий имеет в виду долг или обязанность, то must. Если он выражает принуждение что то сделать, то have to. Ну а если просто говорит " тебе следует", то should. Но я бы предпочла must.
Have you done your homework?
How many exercises have you done?
How long you was doing it?
Was it difficult?
Do you like doing your homework?
How many exercises did you have?
Do you always do your hometask?
Have you done Maths?
Do you like learning smth by heart?
Would you mind to tell me home task?