—Who______ it be that is knocking at the door? —It ______ be Father, but I’m not sure.
I like my music teacher ______ I have great respect.
Those who want to say anything more _________ your hands and then_______ to speak.
Rainforests ____ and burned at such a speed that they will disappear from the earth in the near future.
—Peter, hurry up! You ______ on the phone.—Oh, I ______. Thank you.
I can’t leave the office now. A lot of work ________ to be done.