—Who______ it be that is knocking at the door? —It ______ be Father, but I’m not sure.
Hardly returned home I realized I had left my key at the office.
Fortunately, the little girl the air – crash, but unluckily, the others on the flight were killed.
--- How did the global financial crisis ? --- I’m not quite sure. Anyhow, it is an very important problem facing us.
first time I met him in his office, he shook me by hand warmly and then introduce himself to me.
--- The apple tastes very nice. Could I have another apple, Sir? --- .