I

Here is a _ (1) _ of the _ (2) _ .

The world is _ (3) _ up of seven _ (4) _ . The largest among them is _ (5) _ .

II

Tis boy is writing a _ (6) _ to his friend _ (7) _ . He’s writing it (8) English. As he is not sure _ (9) _ his spelling, he has to look _ (10) _ all the difficult words in the dictionary.

III

I was waiting on the station platform _ (11) _ the Tienjin train when a man _ (12) _ me if I knew the time of the next train to Tienjin. _ (13) _ often had to go there myself, so I knew and told him. A _ (14) _ minutes later an old lady wanted to know whether the train to Shanghai had already left. I knew that it _ (15) _ not, so, of course, I told her. Then a girl came to me and asked _ (16) _ the train from Nanjing was late. I didn’t know. I just told her that when trains were late, _ (17) _ was usually because something had happened. I was wondering why all these people were asking _ (18) _ those questions when I noticed that I was _ (19) _ next to a sign(牌子) _ (20) _ said “Inquiry Office”.