Central Modal Auxiliaries

You ...... me your secret, Hannah. I'm so curious about what happened at the end of the day.
1. must tell
2. mustn't tell
3. have to tell
4. don't have to tell
New cadets ...... two year's training before they are allowed to take up active duty.
1. have to undergo
2. don't have to undergo
3. mustn't undergo
4. must undergo
Our soccer players ...... off the steam from time to time, so they usually go out to the sea and have a big party on a boat.
1. must let
2. have to let
3. mustn't let
4. don't have to let
The vast majority of the fighters ...... every evening because they earn very good salaries.
1. don't have to moonlight
2. have to moonlight
3. mustn't moonlight
4. must moonlight
Grandma, you really ...... the medicine your GP has prescribed for you, otherwise you won't get better.
1. have to take
2. don't have to take
3. mustn't take
4. must take
The lion cubs ...... their freedom because they keep running around the trees all the time.
1. must enjoy
2. have to enjoy
3. mustn't enjoy
4. don't have to enjoy
Harry ...... the ceiling blue if he wants to get paid for the job.
1. has to paint
2. doesn't have to paint
3. mustn't paint
4. must paint
You ...... a modest fee every year if you want to watch TV legally in our country.
1. must pay
2. have to pay
3. mustn't pay
4. don't have to pay
The attorney general ...... his colleagues very competent because he seldom checks their work in detail.
1. must consider
2. mustn't consider
3. have to consider
4. don't have to consider
Our curators ...... all exhibits every year to find out whether they've been damaged and are in need of repair.
1. have to check
2. mustn't check
3. don't have to check
4. must check
The local dentist ...... his job extremely well. I've never heard anybody complain about his work.
1. must do
2. mustn't do
3. has to do
4. doesn't have to do
Some factory workers ...... really unappreciated when they take a look at their pay slips and see what little they earn.
1. must feel
2. mustn't feel
3. don't have to feel
4. have to feel

Central Modal Auxiliaries

Quiz