用括号内所给动词的适当形式填空，必要时加助动词。

     Salt is very common in our everyday life, but have you ever   1   (hear) of some stories about salt? Talking about salt, perhaps nobody can   2   (tell) exactly when people first began   3   (use) it. But it is known to us all that salt  4  (use) in many different ways all through history. People who   5   (live) over 3,000 years ago ate salted fish and salted meat. In ancient Egypt(古埃及), salt was used to keep dead bodies.

     6  (Steal) salt was regarded as a serious crime(罪行) at different times. In the eighteenth century, for example, if a person  7   (catch) stealing salt, he would be put into prison(监狱) at once. Altogether 10,000 people were thrown into prison during that century for stealing salt. About 250 years ago, in the year 1753, anyone taking more salt than he was given would have his arms  8  (cut) off.

     1.             2.              3.                4.           

     5.             6.              7.                8.           

1、1. heard     2. tell          3. to use  4. has been used  5. lived 

6, Stealing   7. was caught  8. cut