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[00:00.43]Unit 2 Don't shout, please£¡                                                    
[00:05.65]Ò»¡¢Listen and choose.ÌýÒ»Ìý£¬Ñ¡Ò»Ñ¡¡£ 
[00:14.67]1.W: Don't jump on the bed.                  
[00:28.21]2.M: Don't swim in the lake. 
[00:39.19]3.W: Don't play on the grass.            
[00:52.94]4.M: Don't climb the tree!               
[01:02.47]5.W: Don't sleep in class.