It is correct "... you must wear ..."?

English as a Second Language English Teacher Explanations (ESL Tests)
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English Grammar Tests, Elementary Level

ESL/EFL Test #50 [color=blue]“Elementary Grammar Questions”, question 10

It is a rule: if you ride in my car you … wear your seatbelt.

(a) may
(b) might
(c) can
(d) have to

English Grammar Tests, Elementary Level

ESL/EFL Test #50 [color=blue]“Elementary Grammar Questions”, answer 10

It is a rule: if you ride in my car you have to wear your seatbelt.

Correct answer: (d) have to
[size=200]_________________________[/size]

It is correct “… you must wear …” ??

Thanks in advance!!

Jon

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.
Yes, you could also use ‘must’ here.
.

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But I think might is also the correct answer, as my knowledge that “Have to” and “migh” are same meaning in positive sentences.
Can you explain to me ??

4

No, your knowledge is confused: ‘have to’ is necessity and ‘might’ is possibility.

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yeb “Mister Micawber”
I’m confused between might and must. Thank for your remind :smiley: