--Mr. Black, this is our language lab. Would you like to go in and have a look?
--OK. .
A. Help yourself
B. This way, please
C. Follow me
D. After you
网友回答
A. Help yourself
B. This way, please
C. Follow me
(答案→)D. After you
解析：考查交际用语，A 请自便 B，请这边走 C 请跟我走 D 你先走
句意为，--布莱克先生，这是我们的语音室，你要进来看一看吗？---好的，你先请。