问题补充:
When he was asked suddenly about the matter ,he couldn’tan answer at once.
A. come up with
B. look for
C. put up with
D. answer for
答案:
A. come up with
B. look for
C. put up with
D. answer for
解析:题意:当他突然被问及那事时,他不能立刻得出答案。come up with“得出答案” look for“寻找” put up with“提出” answer for“负责”