题目

_____ how to express the idea in English, he turned to the dictionary. A. Does not knowB. Not knowing C. Knowing not D. Not to know 答案：B 解析:  not knowing是现在分词作原因状语。。17．-I didn't do well in the interview．-______，Mary．Everything will get better soon．（　　）A．Give upB．Cheer upC．Turn up