Professor Wang, __1__for his informative lectures, was warmly received by his students. Now, he walked into the classroom__2__. He was going to make a lacture about reationship between China and America today.
1. A. knowing B. to be known C. known D. having known 答案[C]
2. A. with a book in his hand B. hand with a book
Cbeing with a book in hand D. to have a book in hand 答案 [A]