ls your sister a teacher or a doctor 怎么答?

ls your sister a teacher or a doctor 怎么答? ls she your uncle’s_?A、son B、daughter c、fathr D、sister ls she your sister?(做肯定回答） ls your sister in the clessroom yes ,she's doing her h_ ()2.--_______there a lake near your school?---Yes,there_______.A.Are；areB.ls；areC.ls；is his sister _______(serve) a cup of tea to him ( )your father( )(have)a sister [ ]your sister[ ]a red apple. ls this ruler_?A:yours B:you C:your ls this__poe? A:you B:your C:yours ls there a big square near your homg . 英语ls this your Ls she your ls this your ls your brother smart ls this your school? ls your cousin s_______? 把下列句子改为复数句子That is my sister Ls this his parent Ls she your friend Yes it is This is my cup 急