单项选择题
The direction were so （） that it was impossible to complete the assignment.
A.ingenious B.ambitious C.notorious D.ambiguous
单项选择题 Beijing is a（）city, and still more people are pouring in.
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 （）.
