问题补充：
My dictionary . I have looked for it everywhere but still it .
A. has lost ; do not find
B. is missing ; do not find
C. has lost ; have not found
D. is missing ; have not found
答案：
A. has lost ; do not find
B. is missing ; do not find
C. has lost ; have not found
(答案→)D. is missing ; have not found
解析：lose是个及物动词，如果要表示某物丢失了，只能用被动语态。A项与C项使用的都是其主动形式。missing是形容词，其词义是：lost ; not to be found (丢失了的)，据此，第一空缺处应填入is missing。根据语境，第二个空缺处应填使用现在完成时的否定形式，因为它可以表示目前还未发生的动作。
