Is eleven? Is he twelve? Is he eleven or twelve?
Can they sing? Can they dance? Can they sing and dance? Can they sing or dance?
Has she got a frog? Has she got a mouse? Has she got a cat and a mouse? Has she got a cat or a mouse?
Are they farmers? Are they workers? Are they farmers or workers?
Are the balloons red? Are the balloons green? Are the balloons red and green? Are the balloons red or green?