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 （）
A. when he gives lectures B. how in the manner that he lectures C. the way to give lectures D. his ability to lecture
单项选择题All those youngesters will become （）in ten years.
A. growns-ups B. growns-up C. grown-up D. grown-ups
