问题
选择题
Before the earthquake, mice ran out of the fields ________ for places to hide.
A．look
B．looking
C．looked
D．were looking
答案
答案：B
题目分析：地震之前老鼠从地里跑出，寻找藏身之地。looking for places to hide是现在分词做状语，对句子做补充说明。故B项正确。本题最容易错选的为C项。如选择C项，该句出现两个谓语动词，应在第二个动词前面加上连词and。