--- She cannot her purse .
--- Yes, she doesn’t know .
A. look for, what she can do it
B. find, what to do it
C. look for, how to do
D. find, what to do
网友回答
A. look for, what she can do it
B. find, what to do it
C. look for, how to do
(答案→)D. find, what to do
解析：look for和find都表示寻找，而look for强调动作，find强调结果，what＋动词不定式作know的宾语，构成一个固定短语。