Mei Li:
Which English city is served by Speke Airport?
Shuai Zheng:
liverpool
Mei Li:
Introduced in the 19th Century in Britain, what were Penny Black and Penny Red??
Shuai Zheng:
postage stamps
Mei Li:
The liqueur Curacao is traditionally flavoured with sugar and which fruit??
Shuai Zheng:
orange