Choose the appropriate modal verbs to complete the sentences. 1. sir, don't you know that when flying you (have to/must) show you passport. 2. i(have to/must) be at the meeting at 6 p. m. so i can't join you for dinner. 3.there are many guests in the house, george will (have to/must) sleep on the sofa 4. people (have to/must) realize there are limits to what we can do.

he, a duck, she, ann, a rabbit.

he will be ableto speakfrenchfree, when he returnsfrom paris.

can itake yourhand? -yesof course!

do you know howto skate?

whenhe was young,hecould walk20 kilometers a day.

no one couldhelp me.

you can dothe jobtomorrow?

iknow how to swimwhen i was 5years old.

you couldtranslate this text?

this bookcan be purchased atany store.

we cangoto the mountainsnext year.