I like to eat grapes __________ seeds. [ ]

Please come here and Let’s talk _______ the pictures on the wall. [ ]

Premier Wen Jiabao started his three-day official visit to South Korea, ______ was aimed at increasing cooperation and good neighborliness.

What are you doing here now? —- I’m thinking _________ chatting with my good friends.

My friend is good at chess, he always beats me _____ it. [ ]