Hello, Sandy. This is Jack. What are you doing?—I’m watching a match. It started at 7:00 p.m. and _____ on for another an hour.
His father looks young, but in fact he is ______.
As we all know, Lost in Thailand is a very successful movie, the cost of ______ is only 30 million yuan.
He was lost in the busy streets. But at last it was _______ of him to find the way home.
Listen! Is Kitty in the next room? —- No, it ______ be Kitty. She has gone to Beijing.