单项选择题
This book will show you （） can be used in other contexts.
A. how you have observed B. how what you have observed C. that you have observed D. how that you have observed
单项选择题 One of the professor's greatest attributes is （）
单项选择题 All those youngesters will become （）in ten years.
单项选择题 Adams now maintains that it is less important to save the nation （）to a perilous future.
