If would be nice if we booked seats the stalls.
If Eliza had improved her pronunciation, she wouldn't have spoken such a terrible language.
If Viorica Chirca hadn't played Eliza's part well, the audience wouldn't have applauded so much.
If the theatre repertoire included more classical plays, its prestige would greatly increase.
What would you do in your school if you were Professor Higgins?
If all of you watched or read the play Pygmalion you would understand how important it is to speak a perfect language.