问题

world’s largest retailer, Wal-Mart,has opened its _____ third store in Beijing, which means the firm now has 52stores in China
A:On hearing the news
B:When heard the news
C:While hearing the news
D:The moment Kate heard thenews
B:When heard the news
C:While hearing the news
D:The moment Kate heard thenews
正确答案是: