6931 - Intermediate\Upper-Intermediate Test:8 - I can’t find my keys. I have a feeling I _____ them in the library.

I can’t find my keys. I have a feeling I _____ them in the library.
should have left
must have left
could leave
might leave
Elementary Grammar Exercises A1
Fiverr 2021 English Level Tests
Pre-Intermediate Grammar Exercises
Table of English Grammar Contents (All Levels)