.—Who______ it be that is knocking at the door? —It ______ be Father, but I’m not sure.
.I don’t understand how you got a ticket. I always_________you_________a careful driver.
.One of the men held the view_________ the reporter stated was not true.
—How do you find the concert in the Beijing Grand Theatre last night? —_______. But the conductor was perfect.
. He _____ English for ten years by the time he takes the examination.
This is a difficult and stressful job, but one ______ you can really help people.