My boss needs this report urgently. I [must/mustn't/have to] finish it as quickly as possible.
"You [must/have to/must to] arrive on time every morning" said the shopkeeper to the new trainee.
Jack [has to/must/have to] walk to work today. The buses are on strike.
Receptionists [have to/must to/must] answer the telephone. That's part of their job.
"You [must/must to/have to] do your homework" said the teacher to the pupils.
"We [must/have/have to] invite our new neighbours for dinner one day" my wife told me.
Donald [has to/have to/must] leave home at 7.30 am in order to get to the office at 9 am.
I [must/must to/have to] hurry up if I want this letter to be sent today.
Employees [must/have to/have] attend all personnel meetings - it's written in their contracts.
"I [must/have to/must to] call my mother - it's her birthday today."
I [have to/must/must to] be at the meeting by 10:00. I will probably [have to/must/have] take a taxi if I want to be on time.
You [mustn't/must/have to] submit the application if it has not been completely filled out. Check that the name, address, and background information are correct. If the form is not accurate and complete, you will be rejected and you will [have to/must/must to] reapply at a later date.
Julia: Look at these flowers - they're beautiful! But, there's no card. Who could have sent them?
Belinda: It [must/has to/had to] have been Mark. He's the only one who would send you flowers.
You [mustn't/must/have to] forget to pay the rent tomorrow. The landlord is very strict about paying on time.
You [don't have to/must/have to] be so rude! Why don't you try saying "please" once in a while.
If you are over 18 in California, you [don't have to/mustn't/must to] take a driver training course to get a driver's license. You can have a friend or a family member teach you instead. But remember, you [must/have to/must to] still get your permit before you start practicing.
You [don't have to/mustn't/must] be rich to be a success. Some of the most successful people I know haven't got a penny to their name.
Chris: My car broke down in Death Valley last week. I [had to/must/must had to] have it towed more than a hundred miles to the nearest mechanic.
Fiona: That [must/had to/has to] have cost a fortune!
While hiking in Alaska, you [have to/must/must to] keep an eye out for bears. If you see one, you [mustn't/don't have to/must] approach it. They are beautiful animals; however, they are wild and unpredictable in nature. You [don't have to/must/have to] be afraid of them, but educating yourself about the dangers can help keep you safe.
I [don't have to/mustn't/don't must] go to work tomorrow because it is Memorial Day. The best thing about a day off from work is that [I don't have to/mustn't/must] get up at 6:00; I can sleep in till noon if I want to.
I [had to/must/didn't have to] cram all day for my French final. I didn't get to sleep until after 5AM.
Victor: Oh no! I completely forgot we were supposed to pick Jimmy up at the airport.
Zoe: She [must/has to/mustn't] still be sitting there waiting for us.
Tina received a scholarship to Yale University which will cover 100% of the tuition. She [doesn't have to/mustn't/must] worry at all about the increasing cost of education.
When I was a child my grandmother was continually correcting our manners. She always used to say, "One [mustn't/don't have to/doesn't have to] eat with one's mouth open." Or, she would correct us by saying, "One [mustn't/has to/doesn't have to] rest one's elbows on the table." And every time I wanted to leave the table, she would say, "One [must/has to/doesn't have to] ask to be excused."
I've redone this math problem at least twenty times, but my answer is wrong according to the answer key. The answer in the book [must/has to/mustn't] be wrong!