Choose the correct present simple forms of ‘to be’.

A: ________ you a teacher? B: Yes, I __________.

A: ________ your name Marcus? B: Yes, it ________.

A: ________ your children here? B: No, they ________.

A: _________ this your suitcase? B: No, it _______.

A: _________ it Saturday today? B: No, It _________ Sunday.

A: _______ your friends from the UK? B: No, _________ from the US.

A: Hello, Maria. How ________ you? B: _________ fine, thanks.

A: How old _________ Peter? B: I think _________ 30 years old.

A: ________ David and Molly here? B: Yes, __________ next to the door.