仔细观察，根据图示回答下列问题，每小题只限写一句话。
(1) Mum wants to watch television but she isn't happy. Why?
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(2) Mum goes to Father for help but he is busy doing something. What's he doing?
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(3) What does she do then?
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(4) What do they find when they go out to have a look at the aerial（天线）?
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(5) After they have straightened（把……竖直）the aerial and got back from the outside，the television is still showing wavy lines（波纹）. why?
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Key:
(1) Because the television doesn't work. (or: Because something is wrong with the television. ) (or: Because the television is broken). (or: Because the television is showing the wavy lines.
(2) He is busy reading a newspaper／book／magazine (and smoking his pipe).(or: He is reading a newspaper／book／magazine and smoking his pipe).
(3) She goes to her son for help. (or: She asks her son to help her. ) (or: She asks her son to see if there is something wrong with the aerial. ) (or: She asks her son to see what has happened to the aerial. )
(4) They find the aerial is broken. (or: Something is wrong with the aerial. ) (or: They find something is wrong with the aerial. ) (or: They find the aerial isn't straight. )
(5) Because the dog is on the aerial, so it doesn't work. (or: Because it's dog that makes the aerial go wrong. )
