---____ was it _____they discovered the entrance to the underground palace?--- Totally by chance.
Great changes ________ in the city since 1979.
-How do you like our restaurant? -I couldn’t have found a ________ one.
Don’t try to cheat the taxman; you’ll never ______it.
—Who______ it be that is knocking at the door? —It ______ be Father, but I’m not sure.
He apologized ________ late.