... Anna a doctor?

(a)  

... they businessmen?

(a)  

... he a football player?

(a)  

... they from the USA?

(a)  

... he an engineer?

(a)  

... they from Australia?

(a)  

... he the president?

(a)  

... they students?

(a)  

Excuse me, ... this the flight to Rome?

(a)  

Excuse me, ... you from Poland? I can hear you speak Polish.

(a)  

... she a tennis player?

(a)  

... they in the office?

(a)  

Excuse me, ... that a university?

(a)