Fifty dollars for such a T-shirt！You_____ be joking！— I’m serious. It’s made of silk.

____ is said that ____ tourists visit the Great Wall every day.

They must have finished the work by the end of last month, ______

you have all finished reading the story, let’s hear your opinions on the main characters.

My neigh bours used to give me a hand in time of trouble, _______ was very kind of them.