I can't find my purse. I___________ it in the supermarket yesterday, but I'm not sure.
should leave
must have left
might leave
could have left
_________, the world would be more harmonious.
(2014) ourselves from the physical and mental tensions,we each need deep thought and inner quietness.
______ in a well-known university is what everybody wishes for.
_______every member has arrived, let’s set about _____ the plan for the next five years.
It is surprising that such a young boy can swim ______ the river ______ 100 meters wide.