Choose the correct options
You + your sister = [ ].
My friend + I = [we|they].
A father + a mother = [he|they].
A cat + a dog = [it|they].
My classmates − I = [she|they].
Two boys − one boy = [he|she].
Three girls − two girls = [we|she].
You + I = [I|we].
Five bananas − four bananas = [they|it].