问题补充:
The boy is running impatiently here and there as if something lost on the sports ground.
A. to search
B. searching
C. searching for
D. to search for
答案:
A. to search
B. searching
(答案→)C. searching for
D. to search for
解析:“寻找” search for sth;男孩与search for为主谓关系所以用现在分词做状语。 男孩急躁的跑来跑去似乎在寻找丢在操场上的什么东西。选C