问题
选择题
----Where ____ the dictionary? I can't see it anywhere.
----I ____ it right here. But now it's missing.
A．did you put; have put
B．have you put; put
C．had you put; was putting
D．were you putting; have put
答案
答案：B
前空为现在完成时，后空由关键词：now it's missing推出刚才放在---地方。