must be!求英语帝……The computer must be repaired at once .when mu

1.The homework must be done by 9 PM.
When must be the homework be done?
2.The apples must be washed twice.
How many times must the apples be washed?
3.The animals must be fed everyday.
How often must the animals be fed?
4.The baby must be put in the bed.
Where must the baby be put?
5.The clothes must be put in the wardrobe.
Where must the cloths be put?
6.The flowers must be watered every week.
How often must the flowers be waterd?
7.The books must be read in the summer holiday.
When must the books be read?
8.The kitchen must be cleaned at once.
When must be the kitchen be cleaned?
9.The toy must be repaired today.
When must the toys be repaired?
10.The girls must be taught by Teacher Lee.
Who must the girls be taught by?
11.Your shoolbag must be put under the desk.
Where must my shoolbag be put?
12.The cats must be parked behind the building.
Where must the cars be parked?
13.The plane must be repaired tomorrow.
When must the plane be repaired?
14.The shoes must be washed on every Sunday.
How often must the shoes be washed?
15.The computer must be brought to the classroom.
Where must the computer brought to?