Perhaps Taobao is Asia’s largest and most popular retail（零售的）network platform , _____ people can buy and sell a great variety of things .

On his way home yesterday , Tom was hit on the head_____he had time to realize what was happening

Idowntown to the shopping centre soon．Could I get you something?—No, thanks．I will do e-shopping

______ on the portrait, mother was deep in thought.

Why didn’t you tell Ann the truth? — _____. [ ]