run hot and cold
to be sometimes good or useful or effective or positive and sometimes the opposite
The reviews of the new movie are running hot and cold and I do not know if I will go and see it.
General Knowledge 2015 - 17
Quantitative Aptitude Test
Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)
Elementary English Grammar Test
Verbal Reasoning Quiz - Mind Game