Jeff and his wife Mary live in the US. Jeff's favorite food is fish. Whenever he has money, he goes shopping and buys a fish for1. Mary has a lot of friends. She always2her friends to have lunch and eat the fish. So when Jeff comes home after work, the fish is3there.  When he asks Mary where his fish is, his wife always says," The cat ate your fish! What a bad4!" Then, she gives Jeff some soup and bread for dinner. Jeff often5sad about it.

One evening, the same thing happened again. After a long day's work, Jeff was very6to go home and eat fish. When he got back, Mary said the cat had eaten the fish. This time, Jeff was angry. He had a(an)7to weigh the cat. He weighed it carefully. Then he turned to his wife and said, "My fish weighed 6 kilos. This cat weighs 6 kilos, too. My fish is here, you said. Then where is my cat?" Mary gave Jeff a guilty( 羞愧的) look.