—Who______ it be that is knocking at the door? —It ______ be Father, but I’m not sure.
—Excuse me, I want to ask for your classmate—Wang Hao. Can you takea message for me? —________. In fact, I haven’t a classmate called Wang Hao.
He is the only man ______ I can find for the work.
Tom said the project would be finished by November, ______personally I doubt very much.
With all the family members ______ on vacation without him, the boy felt extremely lonely and afraid.
It is not when to start the job but who to start ______is of importance.