发布时间：2021-02-17 17:31:19
4 . ______at in this way, the present situation about birds flue doesn’t seem so disappointing.
A. Looking B. Looked
C. Having looked D. To look
B
选B。根据“分词短语作状语，其逻辑主语须与主句的主语保持一致”的原则，因主语the present situation与look at 之间为被动关系，故答案为B。