1) An architect ... study law at the university a) doesn't have to b) has to c) have to d) don't have to 2) A pilot ... sing well. a) has to b) have to c) doesn't have to d) don't have to 3) A doctor and a vet ... know biology. a) has to b) don't have to c) have to d) doesn't have to 4) A nurse and a firefighter ... help people a) don't have to b) have to c) doesn't have to d) has to 5) An engineer ... make projects a) has to b) doesn't have to c) have to d) don't have to 6) A lawyer ... defend people in court a) doesn't have to b) has to c) don't have to d) have to 7) A shop assistant ... work in school a) has to b) don't have to c) have to d) doesn't have to

have to/ don't have to

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