-----Where you put the ruler? I can't see it anywhere.
-----I put it right here. But now it is .
A. have, gone
B. did, missed
C. had ,going
D. will, missing
网友回答
A. have, gone
B. did, missed
C. had ,going
D. will, missing
解析：
考察现在完成时态对现在的影响，missing丢失的'不能用missed代替。