choose :
you [ must - have to ] show your passport when you travel to another country .
you [ must - have to ] pay taxes .


i think the answer is [ havt to ] this is external obligation




ماراي السادة الاساتذة



she must have read the paper , [ mustn't - didn't } she ? b
i think the answer is didn't
مارايكم ولماذا

have to

mustnt she