-----Where is my key? I remember I put it here yesterday.--------You ______  it in the wrong place.
#63592
A
must put
B
should have placed
C
might put
D
might have put
推荐题目
I have trouble ________ the new words. 
#75119
A
memorize
B
to memorize
C
memorizing
D
memorized
If the students who killed themselves had only been more confident, their deaths ________.
#63688
A
need have been avoided
B
must have been avoided
C
might have been avoided
D
will have been avoided