问题补充：
I it everywhere , but I didn’t it .
A. looked for, looked for
B. looked for, find
C. found, looked for
D. find, look for
答案：
A. looked for, looked for
(答案→)B. looked for, find
C. found, looked for
D. find, look for
解析：词义辨析。look for 表示寻找的过程，而find强调的是找的结果，句意：我到处找它，但是我不能找到它。结合语境可知描述的是过去动作，故用一般过去时态。故选B
