Rapid clinic decisions
Choose mustn't or don't have to. Say the complete sentence. 🩺
- You ___ smoke in the clinic.
- You ___ bring your own pen; the doctor has pens.
- Visitors ___ enter this room without a nurse.
- You ___ pay today; your insurance pays.
- Children ___ play with medicine.
- You ___ come early; your appointment is at 4:00.
- You ___ eat before this blood test.
- You ___ wear a coat today; it is warm.
- Patients ___ use mobile phones in the X-ray room.
- You ___ buy vitamins; fruit is enough.
Form | Meaning |
|---|---|
mustn't | prohibited — not allowed |
don't have to | not necessary — optional |
Choosing the best modal
Connect each situation with the best modal. Think: strong instruction, outside rule, or advice.
Connect each situation with the best modal
- Checking the patient's name is essential.
- must
- School rules require students to wear an ID badge.
- have to
- Your friend has a cough and asks for advice.
- should
Now try three more health situations.
Connect each situation with the best modal
- You feel very tired after a fever.
- should
- The receptionist says every patient needs this form.
- have to
- You give a strict safety instruction in the clinic.
- must
Complete each sentence with the correct form. Read the whole sentence aloud.
- I [___] wear a mask here; it is a clinic rule.
- You [___] drink plenty of water when you have a fever.
- We [___] call emergency services now; it is urgent.
- Ana [___] take this medicine at 8:00; the doctor told her to do it.
- Ask the receptionist about necessity: [___] complete this form before I see the doctor?
- He [___] see a dentist; he has a bad toothache.
Modal | Use | Example |
|---|---|---|
must | strong obligation | You must call the doctor. |
have to / has to | outside rule or requirement | She has to show her ID. |
should | advice | You should get some rest. |
Health rules and choices
Decide whether each statement is correct.
Choose the best negative form for each health situation.
- You [___] smoke in the clinic.
- With a mild sore throat, you [___] drink warm water and rest.
- You [___] bring medicine today; the doctor will give it to you.
- Sara [___] take this medicine after breakfast because the doctor ordered it.
Check the form carefully.
Use the meaning, not only the words.
Units 1–3 check
Answer aloud in one complete sentence.
- Your brother has a fever. Give advice with should.
- State a strict rule for a doctor’s clinic with must or mustn't.
- Say one thing a patient does not need to do with don't have to.
Finish with this quick check.
Meaning | Form |
|---|---|
Strong obligation | must |
Prohibition | mustn't |
External obligation | have to / has to |
No necessity | don't have to / doesn’t have to |
Advice | should / shouldn't |


