题目内容

读短文,用所给动词的适当形式填空。
     When you send a postcard, you have to 1_____ (put) stamps on the envelope or on the card. When did
people first begin 2_____ (use) stamps? Who was the first 3_____ (think) of this idea? In the early century,
people 4_____ (not use) stamps. They had to pay postage whenthey received it. Rowland Hill was a school
teacher in England. He was the first to think of 5_____ (use) stamps in the 1850s. He thought it would be
easier for people to use the stamps. Now we know
1. put 2. to use 3. to think 4. didn't use 5. using
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