Solutions for: App 350 / Must or Have to (2)

Practise using "must" and "have to" correctly!
We use "must" and "have to" to talk about things that are necessary to do. They almost mean the same. We often use "must" for more personal ideas about what is necessary to do. For example: I must send Ben a letter (I really want to write to him). Must is also used in formal writing or notices. For example: Passengers must fasten their seatbelts.

We use "have to" for what somebody else thinks is necessary to do or rules that can not be changed. For example: Mum said I have to send Ben a letter. (Mum wants me to write a letter). OR: You have to wear a school uniform in England.

"Must" is not used in questions, use "have to" instead!
For sentences in the past or future you also always use "have to" (in the correct tense). For example: I had to help Mum with gardening yesterday.
Kian __________ wear a tie and blazer to school every day.

Solution:
has to
I __________ take Teddy for a walk. The poor dog has not been outside at all today!

Solution:
must
When do you __________ be at the airport?

Solution:
have to
Billy __________ tidy his bedroom yesterday.

Solution:
had to
My brother __________ go to bed at eight.

Solution:
has to
You __________ be good at speaking in front of others if you want to become president.

Solution:
must
You __________ be quiet in the library!

Solution:
have to
Children __________ use appropriate car seats!

Solution:
must
Do you __________ play your music so loud?

Solution:
have to
I will __________ tell her the bad news tomorrow.

Solution:
have to
She __________ learn for her driving test last summer.

Solution:
had to
Where do you __________ register for art class?

Solution:
have to
I __________ write to Jane to say how happy I am about her letter!

Solution:
must
She __________ leave school early for her dentist appointment today.

Solution:
has to