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TEFL exercises - Intermediate materials - Modals: Must v Have To

grammar

Use Must, Mustn’t, or Have To to complete the following: (Remember that we prefer to use Must for rules and instructions, but Have To is also acceptable.)

Example        You ____ switch off all electronic devices for takeoff and landing.

                    You must switch off all electronic devices for takeoff and landing.

1 You
smoke in here. Look there’s a ‘No Smoking’ sign.
2 I’m not working tomorrow. I don’t
get up early.
3 You
show your passport at immigration in the airport.
4 Job applications
include references and copies of your certificates.
5 I haven’t talked to Sue in ages. I’ll
phone her soon.
6 You
sign a legal form with red ink or it won’t be worth anything.
7 Liz will probably
look after her kids, so I doubt she’ll be able to come out tonight.
8 We didn’t have any cash, so I
use my credit card.
Are you sure?
noYes