base something	on
blame something	on
centre something	on
concentrate something	on
decide 1	on
depend	on
elaborate	on
impose	on
insist	on
pride oneself	on
insure something ... something	against
protest	against
argue	about
be concerned	about
boast	about
decide	about
protest ... something	about
phase something	out
glance	at
guess	at
hint	at
marvel	at
answer	to
appeal	to
apply	to
attend	to
attribute something	to
commit oneself	to
confess	to
devote oneself	to
prefer one thing ... another thing	to
react	to
refer	to
refer someone	to
be resigned	to
resort	to
see	to
subject someone	to
succeed ... the throne	to
be used	to