Unit 1 A proper job
Unit 2 Just like your mother!
Unit 3 We've had a long morning!
Units 1-3 阶段大练兵
Unit 4 A museum piece
Unit 5 How long is your day?
Unit 6 Bird-brained!
Units 4-6阶段大练兵
Unit 7 Speakers'Corner
Unit 8 Crazy about Alexander Calder
Unit 9 What's in a name?
Units 7-9阶段大练兵
Unit 10 Tricks of the trade
Unit 11 Turn it down!
Unit 12 Paul becomes an intern
Units 10-12阶段大练兵
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