We must sing. - Must we sing?
She is lazy. – Is she lazy?
They can ride well. – Can they ride well?
The cat is green. – Is the cat green?
We must sing. - Must we sing?
She is lazy. – Is she lazy?
They can ride well. – Can they ride well?
The cat is green. – Is the cat green?
Is she lazy?
Can they ride well?
Is the cat green?