单项选择题
Beijing is a（）city, and still more people are pouring in.
A.popular B.populate C.populace D.populous
单项选择题 Children always are （） about things they do not know.
单项选择题 Most people travel in the course of their work are given traveling （）.
单项选择题 No one needs to feel awkward in （） his own customs.
