__________ her son for half a month, Marcia decided to leave for Texas with the hope of finding him.
—Did Jack come back early last night?—Yes. It was not yet eight o’clock ____ he arrived home.
If anyone happens to drop in while I am out, ____ him or her leave a message.
—Would you like ____, sir?—No, thanks. I have had much.
I made a call to my parents yesterday. To my disappointment, ____of them answered it.
— What do you think of the White House?— Splendid. While I was studying in America, I it twice.