The _________ look on his face suggested he didn’t know the fact.
The Dragon Tower,from ________ top visitors can enjoy a good ________ of Harbin,attracts hundreds of tourists every day.
He promised me if we_______ the game, he ________us a round of drink.
By next summer John _____in this factory for thirteen years.
Tom sat under a tree and seeing his friend, _____ up in no time.
—When will you come to see me, Dad? —I will go to see you when you_____ the training course.